Choose the explanation that shows why ΔADE is similar to ΔABC.

Recall that a dilation with center (0, 0) and scale factor maps onto .

Now, triangle ADE is formed by

Whereas triangle ABC is formed by

In other words, the coordinates of B and C can be obtained by multiplying by 2 the coordinates of D and E.

This means that you get ABC from ADE by dilating with center (0,0) and scale factor 2.

7y = -4x + 8

Step-by-step explanation:

slope = -4/7

0 = -4/7(2) + b

b = 8/7

y = -4/7x + 8/7 or 7y = -4x + 8