Question

Question:Choose the correct scale factor:
A)2
B)1/2
C)3
D)1/3

Answer 1

Answer: A) 2

Explanation:

The shape has been enlarge which means B and D are ruled out because if a shape gets enlarge its scale factor has to be greater than 1.

We will use the coordinate of the image of D to find the scale factor.

Pre-image: (2,2) Enlarge or image: (4,4)

So as we can see to get from 2 to 4 you will have to multiply by 2. So the scale factor is 2

Answer 2

The length of ND = 3 units

The length of N'D' = 6

6 / 3 = 2

The scale factor is 2