Triangle DEF has coordinates D(1, 1), E(1,5), and F(5, 1). Triangle D'EP is the image of ADEF by a dilation with center (0.0) and a scale 7. What is D'F?

y-1700=200(x+4)

step-by-step explanation:

200(x+4) is 200x + 800 she is saving 200 per week x is the weeks and the -1700 is. us that’s howmuch she already had

linear pair postulates

step-by-step explanation:

for volume, add base x height x width