A triangle is dilated with the center of dilation at point U. Point E is a vertex of the triangle and point E′ is the corresponding vertex of the image. If UE = 2 centimeters and U′E′=10 centimeters, what is the scale factor?

Question

A triangle is dilated with the center of dilation at point U. Point E is a vertex of the triangle and point E′ is the corresponding vertex of the image. If UE = 2 centimeters and U′E′=10 centimeters, what is the scale factor?
A.	−5.0
B.	−0.2
C.	0.2
D.	5.0

@ me · Accepted Answer

the Answer is D 5.0

R_scott · Answer

scale factor = (new length) / (original length)

Vanessa · Answer

What are the coordinates of the image of point E after a dilation with center (0, 0) and scale factor of 1/3