Question

Triangle ABC, with coordinates A(2, 3), B(3, 5), C(7, 4), is dilated by a scale factor of 2. What are the coordinates of the dilated figure, triangle A′B′C′?

Answer 1

When you dilate a shape by a scale factor of 2, you are just multiply the coordinates by 2.

So the points become:

A(2, 3) ===> A'(4, 6)

B(3, 5) ===> B'(6, 10)

C(7,4) ===> C'(14,8)