Question

Use the image to answer the question.

Smaller solid triangle upper A upper B upper C is graphed within larger dotted triangle upper A prime upper B prime upper C prime on a coordinate plane. vertext cordinate A= (2,1) A'=(4,2)
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In the image, triangle ABC
is dilated with reference to the origin to create triangle A′B′C′
. What is the magnitude of dilation?

(1 point)
Triangle ABC
is dilated using a magnitude of
, which results in triangle A′B′C′
.
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Answer 1

2

Explanation: A′ = (4,2) = 2·(2,1) = 2·A, so the dilation factor about the origin is 2.