Question

Trapezoid W′X′Y′Z′ is the image of trapezoid WXYZ under a dilation through point C.

What scale factor was used in the dilation?

−6/5

−5/6

5/6

6/5

Answer 1

Just took the test and the answer was 5/6

The answer is in the screenshot for future people looking for answers :-)

Answer 2

In this, u have to find out what to multiply 18 by to get to 15...

In other words, 18 times what is 15...
18x = 15
x = 15/18
x = 5/6 <== ur scale factor

check it.....18 * 5/6 = 90/6 = 15 (correct)

so ur answer is : 5/6