What is the equation of the line graphed? a) y = 3x b) y = 3x - 2 c) y = -3x - 2 d) y = -3x + 2

To find the equation you need any two points on the line
let us pick (0,-2) and (1,1)
we can find the slope

using the point-slope equation
(y-y1)=m(x-x1) so choosing either of the points i will pick (1,1)
y-1=3(x-1)
y-1=3x-3
y=3x-2 which is b

the image of (6, 9) under a dilation is (4, 6). the scale factor is

b. 2/3

The answer of the above is