Test, Form 2B - Chandler Unified School District · 68 Course 3 • Chapter 3 Equations in Two...
-
Upload
truongnhan -
Category
Documents
-
view
215 -
download
0
Transcript of Test, Form 2B - Chandler Unified School District · 68 Course 3 • Chapter 3 Equations in Two...
Course 3 • Chapter 3 Equations in Two Variables 67
NAME _____________________________________________ DATE __________________ PERIOD _________
SCORE _________Co
pyri
ght
© T
he M
cGra
w-H
ill C
ompa
nies
, Inc
. Per
mis
sion
is g
rant
ed t
o re
prod
uce
for
clas
sroo
m u
se.
Write the letter for the correct answer in the blank at the right of each question.
1. What is the slope of a ski run that rises 5 feet for every horizontal change of 20 feet?
A. 1 −
20 B. 1 −
5 C. 1 −
4 D. 20 −
5
2. What is the constant rate of change between the two quantities in the table?
Number of Hours (x) 2 4 6 8Snowfall (inches) (y) 3 6 9 12
F. 3 −
2 G. 2 −
3 H. -2 −
3 I. -3 −
2
3. What is the slope of the line that passes through the points E(5, 1) and F(2,-7)?
A. 8 −
3 B. 3 −
8 C. -
3 −
8 D. -
8 −
3
4. The cost of peanuts varies directly with the number of pounds bought. If 3 pounds of peanuts cost $6.30, what is the cost of 4.5 pounds?
F. $7.35 G. $8.40 H. $9.45 I. $10.05
5. What are the slope and y-intercept for the graph of y - 3x = -1. A. slope: 1, y-intercept: 3 C. slope: -3, y-intercept: 1 B. slope: 3, y-intercept: -1 D. slope: -1, y-intercept: -3
6. What is the equation in slope-intercept form for graph shown? F. y + x = −2 G. y - 2x = 1 H. y = 2x + 1 I. y = -2x + 1
7. What are the x- and y-intercepts for the graph of 4x - 3y = -12? A. x-intercept: -3, y-intercept: - 4 B. x-intercept: 3, y-intercept: 4 C. x-intercept: 3, y-intercept: - 4 D. x-intercept: -3, y-intercept: 4
Test, Form 2B
y
x1
1
1.
2.
3.
4.
5.
6.
7.
C
F
A
H
B
I
D
061_072_CC_A_AMC3_C03_662329.indd Page 67 29/02/12 12:07 AM s-019061_072_CC_A_AMC3_C03_662329.indd Page 67 29/02/12 12:07 AM s-019 /Volumes/102/GO00864_AM_R1/MIDDLE_SCHOOL_MATH/NATIONAL/ANCILLARY.../Volumes/102/GO00864_AM_R1/MIDDLE_SCHOOL_MATH/NATIONAL/ANCILLARY..
P rinter P DF
Course 3 • Chapter 3 Equations in Two Variables68
NAME _____________________________________________ DATE __________________ PERIOD _________
SCORE _________Copyright ©
The McG
raw-H
ill Companies, Inc. Perm
ission is granted to reproduce for classroom use.
Test, Form 2B (continued)
8. At store A, rulers are sold individually. The cost y of x rulers is represented by the equation y = 0.95x. The costs of rulers at store B are shown in the table.
Number of Rulers (x) 5 10 15 20Cost (y) $4.60 $9.20 $13.80 $18.40
Which of the following statements is true? F. The rulers at store A cost more. G. The rulers at store A cost $0.90 each. H. The rulers at store B cost $0.90 each. I. The rulers at store B cost more.
9. What is the equation in slope-intercept form for the line that passes through the points (-1, 3) and (-2, -3)?
A. y = 6x - 9 C. y = -6x - 9
B. y = 6x + 9 D. y = -6x + 9
10. What is the solution of the system of equations below? y + 2x = 2 y + 4x = 0 F. (1, -4) G. (-1, -4) H. (-1, 4) I. (1, 4)
11. Georgia is renting two kinds of rowboats for the campout. One type of rowboat seats 3 people and the other seats 5 people. If 53 people will be at the campout and she rents 13 boats, how many of each type of boat does she rent?
12. Homer is saving for a harmonica. He already has $15 saved and intends to save $4 each week. The equation for the amount of money y he has saved is y = 4x + 15, where x is the number of weeks. What do the slope and y-intercept represent?
13. Solve the system by graphing.
y = 3x + 4
y = x + 2
8.
9.
10.
11.
12.
13. y
xO 1
1
F
B
H
6 boats seating 3 people, 7 boats seating 5 people
slope: amount he saves each week; y-intercept: the amount already saved
(-1, 1)
(-1, 1)
061_072_CC_A_AMC3_C03_662329.indd Page 68 3/6/12 7:39 PM s-74user061_072_CC_A_AMC3_C03_662329.indd Page 68 3/6/12 7:39 PM s-74user /Volumes/102/GO00998/CCSS_IMAGINE_IT/NATIONAL/ANCILLARY/CCSS_SUPPLEMENT.../Volumes/102/GO00998/CCSS_IMAGINE_IT/NATIONAL/ANCILLARY/CCSS_SUPPLEMENT...
P rinter P DF