Answer:
4
Step-by-step explanation:
Point slope Formula: y2-y1/x2-x1
10+2/7-4
=4
the answer is 14.14
The scale factor of 4 was applied to the first triangle. 6 was divided by 4 to get 1.5
E' = (-9, -2)
F' = (-8, -2)
G' = (-8, -4)