Question

The dotted triangle is a dilation image of the solid triangle. What is the scale factor?

Answer 1

A. 2
B. 3
C. 1/3
D.1/2

Answer 2

just compare one of the lengths of corresponding sides... use the horizontal one.
notice the image is 3 units
while the preimage is 9 units.

so the scale factor must be 3/9 = ???

Answer 3

1/3?

Answer 4

yes

Answer 5

are the units like where they are on the y axis?

Answer 6

1 unit is the distance between points along the same horizontal or vertical line.