Question

7. Which transformation of (x, y) is a dilation? (TEKS G.3.A)

F (3x, y)
G (-y, x)
H (3x, 3y)
J (x + 3, y + 3)

Answer 1

H (3x,3y)

Explanation:

Dilation is a transformation when figure is enlarged or reduced by scale factor. During dilation, every point of preimage is dilated by scale factor, so it means each coordinate of that point must be multiplied by scale factor.

Hence, H(3x,3y) can be the result of dilation with scale factor of 3.