Question

pre - image abcd is dilated to be image abcd
the origin is the center of dilation
what scale factor is used to create the dilation?
enter your answer in the box.

Explanation:

Step1: Pick a vertex pair

Choose point $B(2,3)$ and its image $B'(10,15)$

Step2: Calculate scale factor

Divide image coordinate by pre-image coordinate: $\frac{10}{2}=5$ or $\frac{15}{3}=5$

Answer:

5