Which equation does the graph represent (see picture) A. y = -2x
B. y= -1/2x
C. y = 2x
D. y = 1/2 x

Y=Mx +b

B is 0 because that’s where the graph intercepts the y axis.

M is found by picking any two points and finding the rise and run because m is equal rise/run

Points of choice: (-2,4) and (2,-4)

=2−1/2−1 = -8/4

m is equal -2

Y= -2X

Look at the picture below to differentiate between positive and negative slopes.

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

b. 2/3