Question

line segment ab is dilated to create line segment ab using point q as the center of dilation. what is the scale factor? 1 1.25 2 2.5

Explanation:

Step1: Recall dilation formula

Scale factor $k=\frac{QA'}{QA}$.

Step2: Observe lengths

From the figure, $QA' = 1.25\times QA$, so $k = 1.25$.

Answer:

1.25