week 3 February 03, 2016 - MCCC › ~porterr › course › 135 › documents › i3.pdf · week 3...
Transcript of week 3 February 03, 2016 - MCCC › ~porterr › course › 135 › documents › i3.pdf · week 3...
week 3 February 03, 2016
week 3 February 03, 2016
week 3 February 03, 2016
week 3 February 03, 2016
y=mx+b
y = 2x 6
is (10,12) on line? No 2*10 6 not equal 12
slope(m)
intercept(b)
y=mx+b
week 3 February 03, 2016
m=5/2 point slope form:
yy1=m(xx1)
(x1,y1) is a pointy(6)=(5/2)(x(4))
y + 6 = (5/2)(x + 4)
y + 6 = (5/2)x + 10
6 6
y = (5/2)x + 4
m= 4 / 3
(2,6) (5,2)
m= y2 y1
x2 x1
6 2
2 5y y1 = m ( x x1)
y 6 = (4/3) (x 2)
week 3 February 03, 2016
lines L1 and L2 with slopes m1 and m2
Parallel m1 = m2
Perpendicular m1 = 1/m2 negativereciprocol
ex: perependicular to slope m1 = 4/3
is m2 = 3/4
y=3
x = 7
week 3 February 03, 2016
General Form of a Line
Ax + By = C
6x + 2y = 24
I know (0,12) is y intercept
and (4,0) is x interceptslope: 12/4
or 3
Functions = job
domain: input
range: output
data graphs equations
(1,2) (3,4)
(1,2) (1,3)fun:
not:
f(x) = x + 1
x = 2
g(x) = 2x 7
find g(3) = 2 * 3 7 = 6 7 = 1 ex:
week 3 February 03, 2016
40
450
week 3 February 03, 2016
week 3 February 03, 2016
week 3 February 03, 2016
(2,5] domain
range [4,2)
x 4 > 0x > 4[ 4 , oo )
week 3 February 03, 2016
week 3 February 03, 2016
week 3 February 03, 2016