Unit 6 Algebra - Weebly
Transcript of Unit 6 Algebra - Weebly
Unit 6Exponents
Thursday March 25, 2021 Activator
Where is the exponent button?
Evaluate the following for y.
y = (5)(5)(5)(5)(5)
π¦ = 52(53)y = 3125
y = 3125 Page #3 Lesson 6.1
Todayβs Objective
Students will be able to multiply, divide, and expand with exponents.
Unit 6Lesson 1
Write in expanded notation and simplify.
43(42)
(x)(x)(x)(π₯)(π₯)
45 ππ 1,024
π₯3(π₯2)
(4)(4)(4)(4)(4)
π₯5Page #3 Lesson 6.1
Where is the exponent button?
Todayβs New Vocab (1 of 4)
.
Write in Expanded notation. Then, simplify.
(32)4
(32)(32)(32)(32)
(3β 3)(3 β 3)(3 β 3)(3 β 3)
3β 3 β 3 β 3 β 3 β 3 β 3 β 3
38 or 6,561
(π¦2)4
(π¦2)(π¦2)(π¦2)(π¦2)
(yβy)(y βy)(y β π¦)(y β π¦)
π¦ β π¦ β y β π¦ β y β π¦ β y β π¦
π¦8
Todayβs New Vocab (2 of 4)Page #3
Lesson 6.1
Todayβs New Vocab (3 of 4)Write in Expanded notation. Then, simplify.
27π₯4
23π₯
2 2 2 2 π₯π₯π₯
2 2 2 2 2 2 2 π₯π₯π₯π₯
2 2 2 π₯
24π₯3Page #3
Lesson 6.1
Todayβs New Vocab (4 of 4)Are the two problems equivalent (equal)? Yes
(2π₯3)2 πππ 4π₯6
(2π₯3)(2π₯3) 4xxxxxx(2)(x)(x)(x)(2)(x)(x)(x)
22π₯6
4π₯6Page #4
Lesson 6.1
GWQβs
#1#2#3#4#5
#6#7#8#9#10
24,21,12,7,36
28,19,16,4,44
26,22,13,1,45
30,18,16,9,43
25,17,14,5,39
24,21,12,7,36
26,22,13,1,45
28,19,16,4,44
30,18,16,9,43
25,17,14,5,39
Page #1-2 Lesson 6.1#15 is a fraction answer.
Thursday March 25, 2021 Work Period
What is the product of 8.05 β 106 and 3.5 β 102 ?
(8.05)(10)(10)(10)(10)(10)(10) β (3.5)(10)(10)
(8.05)(3.5)(10)(10)(10)(10)(10)(10)(10)(10)(8.05)(3.5)(108)
(28.175)(108)
(2.8175)(108+1)
(2.8175)(109)
Page #4 Lesson 6.1
Thursday March 25, 2021 Exit Ticket
.
The product (multiplication) of (3π₯)2 and 6π₯3
(3x)(3x) β (6)(x)(x)(x)
(3)(3)(6)(x)(x)(x)(x)(x) commutative
54π₯5
Write in expanded notation.
What property?
Page #4 Lesson 6.1
Thursday April 8, 2021 Activator
800, 400, 200, ____, ____, ____
-6, 18, -54, ____, ____, ____
What are the next three in the sequence?
Pattern?
Pattern?
100 50 25
162 -486 1458
π·ππ£πππ ππ¦ 2
(-3)Multiply ππ¦Today, we are doing horizontal tables.
Page #7 Lesson 6.2
Multiply ππ¦1
2
Todayβs Objective
Students will be able write Geometric sequences.
Unit 6Lesson 2
Todayβs New Vocab (1 of 4)How do you determine the pattern?
3, 6, 12, 24
900,300,100,33.3
π0, π1, π2, π3
π0, π1, π2, π3
π2π1π2
π1= 12
6= 2
π2
π1= 100
300=
1
3
Multiply by 2
Divide by 3Page #7 Lesson 6.2
Todayβs New Vocab (2 of 4)
Page #7Lesson 6.2
Make a table for this pattern.
x a(x)
0 3
1 6
2 12
3 24
ππ₯ = 3 (2)π₯y = B (πΆ)π₯
3, 6, 12, 24π0, π1, π2, π3
(2)(2)(2)
Todayβs New Vocab (3 of 4)
ππ₯ = is the answerπ0= the beginning blankC = the change (or ratio)x = number we are finding
Use Algebra to determine the 8th number.
3, 6, 12, 24,β¦ππ₯ = 3 (2)π₯
π8 = 3 (2)8
π8 = 384
Page #8 Lesson 6.2
X used to make a table and graph.
y = B (πΆ)π₯
Todayβs New Vocab (4 of 4)Geometric Sequence (Division) What is the pattern (c) and what is π5? 6
384, 192 ,___ , ___, ___, ___π0 π1 π2 π3 π4 π5
C =π2
π1=
96
192=
1
2
(1
2)
Page #8 Lesson 6.2
x a(x)
0 384
1 192
2 96
3 48
4 24
5 12
Group Work Questions
#1#2#3#4#5
#6#7#8#9#10
2,5,9,11,13,15
3,6,10,12,14,16
Page #5-6 Lesson 6.2
2,5,9,11,13,15
3,6,10,12,14,16
2,5,9,11,13,15
3,6,10,12,14,16
2,5,9,11,13,15
3,6,10,12,14,16
2,5,9,11,13,15
3,6,10,12,14,16
Thursday April 8, 2021 Work Period
.
In a Geometric sequence, the beginning term is 2 and the common ratio is 3. What is the 7th term ?
π7 = 2 (3)7
π7 = 4374Page #8Lesson 6.2
x a(x)
0 2
1 6
2 18
7 4374
(3)ππ₯ = 2 (3)π₯
Thefunction
y = B (πΆ)π₯
(3)
6, __, __, ___, ___, ___, ___π0 π1 π2 π3 π4 π5 π6
(3)
Thursday April 8, 2021 Work PeriodIn a Geometric sequence, the beginning term is 6 and the common ratio (C) is 3. What is the 6th
term ? Write the pattern from π0π‘π π6. Page #8 Lesson 6.2
Monday April 12, 2021 ActivatorWhy/how is the right line curved? There is an exponent in the function/equation.
f(x)= 3x f(x) = 3π₯
Page #11Lesson 6.3
Linear(Straight)
Not Linear(Not Straight)
Todayβs Objective
Students will be able to graph exponential functions.
Unit 6Lesson 3
Todayβs New Vocab (1 of 4)What are exponential equations?
Curved lines with an exponent.Example y = 2π₯ or f(x)= 2π₯
y = B (πΆ)π₯
B = is the beginning and initial value (0,B) and where the graph crosses the y axis.
Page #11Lesson 6.3
x f(x)
0 1 BWhat is initial value when f(x)= 2π₯ ? B = 1
(0, 1)
.
Create a graph for y = 2π₯
over the interval 0 β€ x β€ 3. x f(x)
0 1
1 2
2 4
3 8
Todayβs New Vocab (2 of 4)
Page #11Lesson 6.3
C = 2 Common (multiplier).
B
(2)(2)
Todayβs New Vocab (3 of 4)Does the function model growth or decay?
f(x) = (2)π₯ Growth. Why? C > 1The graph goes up.Page #11
Lesson 6.3
f(x) = (1
2)π₯
Decay. Why? C < 1The graph goes down.
A multiplier of (1) keeps any number the same.
Todayβs New Vocab (4 of 4)If f(x) = (2)π₯ y = B (πΆ)π₯
What is f(3)?f(3) = 8
f(x) = (2)π₯
f(3) = (2)3
f(3) = 8f(3) =(2)(2)(2)What is the common
multiplier? C = 2
Page #12Lesson 6.3
Group Work Questions
#1#2#3#4#5
#6#7#8#9#10
2,4,3,10,14
7,4,9,13,16
6,4,8,12,15
2,4,3,10,14
6,4,8,12,15
7,4,9,13,16
2,4,3,10,14
2,4,3,10,14
6,4,8,12,15
7,4,9,13,16
Page #9-10Lesson 6.3
Monday April 12, 2021 WPeriod
.
Linear means βStraight lineβ no exponentNot Linear mean βNot Straight Line or Curved lineβ
Create a table for f(x)= 4(1
2)π₯
over the interval β1 β€ x β€ 2.
x f(x)
-1 8
0 4
1 2
2 1
Is this a linear table/graph?
No, Why? The line curves.
Page #12Lesson 6.3
f(x) = π₯3 f(x) = 3π₯
What is f(4) for function?Quadratic:
Number ExponentExponential:
Variable Exponent
f(4) = (4)3
f(4) = (4)(4)(4)
f(4) = 64
f(4) = (3)(3)(3)(3)f(4) = 3(4)
f(4) = 81
Monday April 12, 2021 Exit TicketPage #12 Lesson 6.3
Friday April 16, 2021 ActivatorHow are the two functions different?
k(x) = 2π₯ j(x) = 2xWhat is k(4) and j(4)?
x k(x)
4 16
x j(x)
4 8
k(4) = 2(4)
k(4) = (2)(2)(2)(2)
Linearj(4) = 2(4)j(4) = 8
NotLinear
Page #15Lesson 6.4
Todayβs Objective
Students will be able to evaluate and graph exponential functions.
Unit 6Lesson 4
Picture of the day Origin (0,0) in the center
Zoom out
Origin (0,0) in the corner
Zoom in
Todayβs New (1 of 4)The red line is linear and has NO exponent. The green line is exponential graph. It has an exponent.
Y = 2π₯β8
Y = π₯
5
Page #15Lesson 6.4
Zoom in Graph
Todayβs New Vocab (2 of 4)
Evaluate j(x) = 16 β 4π₯x j(x)
0 16
1 64
2 256
3 1024
When x = 3, what is j(3) ?
j(3) = 16 β 4(3)
j(3) = 16 β 4(4)(4)j(3) = 16β 64j(3) = 1024Page #15
Lesson 6.4
Is the point (3,1024) on the line j(x) = 16 β 4π₯? Yes
Todayβs New Vocab (3 of 4)Evaluate k(x) = 16 β
1
4
π₯
x k(x)
0 16
1 4
2 1
When x = 2, what is k(2) ?
k(2) = 16 β1
4
(2)
Page #15Lesson 6.4
k(2) = 16 β1
4β1
4
k(2) = 1
Todayβs New Vocab (4 of 4)Graph k(x) = 16 β
1
4
π₯
x k(x)
0 16
1 4
2 1
over the interval of 0 β€ π₯ β€ 2
Page #15Lesson 6.4
The origin (0,0) is in
the corner. Zoom in.
Growth or Decay?
Group Work Questions
#1#2#3#4#5
#6#7#8#9#10
2,5,6,9
2,5,6,9
2,7,8,9
2,7,8,9
2,5,6,9
2,5,6,9
2,7,8,9
2,7,8,9
2,5,6,92,7,8,9
Page #13-14Lesson 6.4
#3 and #4 are
decimals answers.
.
Friday April 16, 2021 Work Period
Who is the most productive in hour 2 and 6?
Tom and SeanWhat is his productivity rate at those hours?
T(2) = 47 T(6) = 47S(2) = 25 S(6) = 75B(2) = 3 B(6) = 27
Page #16Lesson 6.4
47
75
27
3
Evaluate j(x) = 3 β 5π₯ the function.
x j(x)
0 3
1 15
2 75
When x = 2, what is j(2) ?
j(2) = 3 β 5(2)
j(2) = 3 β 5(5)j(2) = 3β 25j(2) = 75
Friday April 16, 2021 Exit TicketPage #16
Lesson 6.4
Tuesday April 20, 2021 Activator
2, 8, 14, ___, ___, ___, ___, ___π0 π1 π2 π3 π4 π5 π6 π7
Given the following pattern. What is π΄7?+6 +6 +6
20 26 32 38 44
Is this an exponential pattern? NoWhy? There is repeated addition, not multiplication. Page #19
Lesson 6.5
Todayβs Objective
Students will be able to write recursive patterns given the function.
Unit 6Lesson 5
Todayβs New Vocab (1 of 4)
-7, 5, 17, 29, π0 π1 π2 π3
+12 +12 +12
Page #19Lesson 6.5
https://www.youtube.com/watch?v=v1ucHH06AxM 3min
If y = 12x β 7, what is y when x = 3?y = 12(3) β 7
y = 36 β 7
y = 29
π3 = 29
x Y
0 -7
1 5
2 17
3 29
Video
Todayβs New Vocab (2 of 4)Write the recursive pattern π΄π+1 = π΄π β 2
π΄1 = 6
6, 4, 2, ___, ___, ___, ___, ___π1 π2 π3 π4 π5 π6 π7 π8
-2 -2 -2
Is this pattern Linear? Yes, it is repeated subtraction.
Page #19Lesson 6.5
π΄π+1 = The next number
Todayβs New Vocab (3 of 4)
6, 4, 2, ___, ___, ___, ___, ___π0 π1 π2 π3 π4 π5 π6 π7
Explicit formula
Y = MX + BY = -2x + 6
Recursive formula π΄π+1 = π΄π β 2
π΄1 = 4π΄0 = B = 6
0 -2 -4 -6 -8-2 -2 -2
Page #19Lesson 6.5
.
Todayβs Misconception (4 of 4)Write the recursive formula.
π΄π+1 = π΄π + 3π΄0 = B = 2π΄1 = 5
+3 +3
Page #20Lesson 6.5
Group Work Questions
#1#2#3#4#5
#6#7#8#9#10
1, 2, 3, 4
3, 4, 1, 2
1, 2, 3, 4
1, 2, 3, 4
1, 2, 3, 4
1, 2, 3, 43, 4, 1, 2
3, 4, 1, 2
3, 4, 1, 2
3, 4, 1, 2
Page #17-18Lesson 6.5
Tuesday April 20, 2021 Work Period
.
πβ+1 = (2)πβπ0 = 4
Write the recursive formula.
h P(h)
0 4
1 8
2 16
0 32
Page #20Lesson 6.5
(2)
(2)(2)
π0+1 = (2)π0π1 = (2)(4)
π1 = 8
Write the recursive formula. What is π8?
-9, -6, -3, 0, 3, 6, 9, 12 π1 π2 π3 π4 π5 π6 π7
ππ+1 = ππ + 3π1 = β9
+3 +3 +3
Tuesday April 20, 2021 Exit Ticket
Page #20Lesson 6.5 π8 = 12
π7+1 = π7 + 3π8 = 9 + 3
π8
Exponential
Linear
Linear or Exponential graph? Why?Friday April 23, 2021 Activator
Page #23Lesson 6.6
f(x) = β1
2x -1 f(x) = 1(2π₯)
Straight It has an Exponent.
Todayβs Objective
Students will be able to write the difference between linear and exponential word problems.
Unit 6Lesson 6
Todayβs New Vocab (1 of 4)
Is the situation linear or exponential?
x C(x)
0 100
1 110
2 120
3 130
A Goldβs gym membership costs $100 to sign-up and $10 dollars per month.
LinearWhy? Adds $10 per month
+10
+10
+10Explain C(0): The beginning cost
Page #23Lesson 6.6
Todayβs New Vocab (2 of 4)
x C(x)
0 100
1 110
2 120
3 130
Equation: y = mx + b
C(x) = $10x + $100
+10
Write an equation and function to model this situation.
Function: C(x) = mx + bM = $10 = the monthly payment
+10
+10
B = $100 = Beginning Sign-up Fee
Todayβs New Vocab (3 of 4)
x f(x)
0 100
1 200
2 400
3 800
Is the situation linear or exponential? You have discovered you have termites. Termites reproduce at a rapid pace. Some termite colonies can double in size monthly. You currently have
about 100 termites in your house.
Exponential Why? Repeated Multiplication
(2)(2)(2)
Todayβs New Vocab (4 of 4)
x f(x)
0 100
1 200
2 400
3 800
Equation: y = b(ππ₯)
f(x) = 100(2π₯)
(2)
Write an equation (function) to model this situation.
Function: f(x) = b(πΆ)π₯
C = (2) = Doubles (Times 2)
(2)(2)
B = 100 = Beginning Termites
Page #24Lesson 6.6
Todayβs New Vocab (3 of 4)
6, 4, 2, ___, ___, ___, ___, ___π0 π1 π2 π3 π4 π5 π6 π7
Explicit formula
Y = MX + BY = -2x + 6
Recursive formula π΄π+1 = π΄π β 2
π΄1 = 4π΄0 = B = 6
0 -2 -4 -6 -8-2 -2 -2
Page #19Lesson 6.5
.
Todayβs Misconception (4 of 4)Write the recursive formula.
π΄π+1 = π΄π + 3π΄0 = B = 2π΄1 = 5
+3 +3
Page #20Lesson 6.5
Group Work Questions
#1#2#3#4#5
#6#7#8#9#10
1, 5, 6
1, 5, 6
1, 6, 5
1, 6, 5
1, 5, 6
1, 5, 6
1, 6, 5
1, 6, 5
1, 5, 61, 6, 5
Skip5D6E
Page #21-22Lesson 6.6
Friday April 23, 2021 Work Period
.
Last weekend, Emma sold lemonade at a yard sale. Emma earned money selling c cups. Sales were strong, so she raised the price from 50 cents to 75 cents per cup. She spent $9.96 on supplies each week. Write the function which represents her profit, P(c) for this last weekend and this weekend.
P(c)= $0.50c - 9.96 last weekend
P(c)= $0.75c - 9.96 this weekend
+$0.25C
Let c = The number of cups
Page #24Lesson 6.6
Friday April 23, 2021 Exit Ticket Emma sold 80 cups of lemonade each weekend, how much money did she make selling lemonade each week?
P(c) = $0.50c - 9.96 P(c) = $0.75c - 9.96P(80) = $0.50(80)-9.96
P(80) = $40 - 9.96
P(80) = $30.04
P(80) = $0.75(80) - 9.96
P(80) = $60- 9.96
P(80) = $50.04
Last weekend This weekend
Tuesday April 27, 2021 Activator
x y
-2 1
-1 2
0 4
1 8
Given this table, what is the beginning Value (B-value)? B = 4 (2)
(2)(2)
Is this a linear or exponential graph? ExponentialWhy? Repeated Multiplication
Page #27Lesson 6.7
Todayβs Objective
Students will be able to write exponential equations and functions.
Unit 6Lesson 7
x f(x)
-1 2
0 4
1 8
2 16
Given this table, write a function.
C = π΄2
π΄1=
16
8= (2) (2)
(2)(2)
F(x) = b(πΆ)π₯
f(x) = 4(2)π₯
Todayβs New Vocab (1 of 4)Page #27
Lesson 6.7
Todayβs New Vocab (2 of 4)
x F(x)
0 4
1 8
2 16
3 32
Write the exponential function.Evaluate for F(3).
F(x) = B (πΆ)π₯B = 4C = (2)
F(x) = 4 (2)π₯
F(3) = 4 (2)3
F(3) = 4(2)(2)(2)F(3) = 32
Page #27Lesson 6.7
Todayβs New Vocab (3 of 4)Graph the function. F(x) = 4 (2)π₯
x F(x)
-2 1
-1 2
0 4
1 8
Is this exponential growth or
decay?Growth Why?
(4 of 4) Make a table, and write an equation.
x y
0 100
1 50
2 25
3 12.5
y = B (πΆ)π₯
y = 100 (1
2)π₯
Growth? Decay?
C = π΄2
π΄1=
25
50= (
1
2)
(1
2)
(1
2)
Group Work Questions
#1#2#3#4#5
#6#7#8#9
#10
1, 4, 8
2, 4, 8
6, 4, 8
2, 4, 8
1, 4, 8
6, 4, 81, 4, 8
6, 4, 8
2, 4, 8
1, 4, 8
#5, #3 have decimal B
values
#7 π΄2 ππ ππππππππ.
Page #25-26Lesson 6.7
Tuesday April 27, 2021 Work Period
.
The manufactures of Hess toys cost of $125 to designand $5.25 manufacture each toy. If the cost of manufacturing t toys, write the function.
C(t) = 5.25t + 125
Linear or exponential? Linear b/c addition $5.25y = mx + b
C(t) = mt + bPage #28
Lesson 6.7
Tuesday April 27, 2021 Exit Ticket
.
The Hess company wants to know how much it will cost to manufacture 250 toys.
c(t) = $5.25t + $125c(250) = $5.25(250) + $125
c(250) = $1437.50c(250) = $1312.50 + $125
It will cost $1437.50 to manufacture 250 toys.
Monday Activator Page #30
Unit 6 Review
88
100= 0.88
C < 1 This graph is decreasing.
#6
Todayβs Objective
Students will be able to review all objectives from Unit 6.
Unit 6Review
Todayβs New Vocab (1 of 4)
Page #29Unit 6 Review
#4Growth or decay?
Todayβs(2 of 4)
Page #31Unit 6 Review
Simplify
#10
Todayβs New Vocab (3 of 4)#17 What is the 9th term?3, 12, 48, ___, ___, ___, _____, π0 π1 π2 π3 π4 π5 π6
C = π΄2
π΄1=
48
12= (4)
____, _____, _______, π7 π8 π9
192 768 3072 12288
49152 196608 786432
#18 What is
the pattern?
.
New Vocab (4 of 4)#15: Increasing or decreasing? decreasing
Why? C < 1 Multiplier is Less than 1
Page #32Unit 6 Review
t P(t)
11
GWQβs Skip #7
#1#2#3#4#5
#6#7#8#9#10
1, 12, 5, 14
2, 3, 9, 141, 12, 5, 14
1, 12, 5, 14
1, 12, 5, 14
1, 12, 5, 142, 3, 9, 14
2, 3, 9, 142, 3, 9, 14
2, 3, 9, 14
Page #29-32Unit 6 Review
Monday Exit TicketPage #30
Unit 6 Review#7Determine the 3rd term in the pattern 28, 112, ____.How do you calculate the common multiplier?
π΄1 π΄2 π΄3
C = π΄2
π΄1=
112
28= (4)
4 4448
x A(x)
1 28
2 112
3 4484
Wednesday Activator β’ Please take out your Homeworkβ’ Please take out your Classworkβ’ Unit #6 Test: All Questions 5% β’ No work needed on #2, #4, #11β’ Extra Credit project next class (Add 5%)β’ You must receive at least a 65%, or you
must stay after school to complete it.β’ Extended Time: Thur 7:45-8:30, Mon 2:45-3:45β’ must pass by the end of Q3 Friday, April 17th
Determine if the table is linear or exponential.
Linear Repeated Addition Repeated Multiplication
Exponential
+2+2+2+2
(2)
(2)
(2)
(2)