### Home > CC4 > Chapter 7 > Lesson 7.1.1 > Problem 7-8

7-8.

Jay enlarged figure A so that it was similar to figure B. His diagram is shown at right. Homework Help ✎ What is the scale factor?

What is the value of

*x*? How do you know?

Read Math Notes box in Lesson 7.1.1 to determine how to write a scale factor.

Remember a scale factor is a ratio (fraction).

Which side of figure A corresponds to side *x* in figure B?

Multiply that side length by the scale factor you found in part (a)..