# 7th grade math Ms. Sue please!

posted by
**Delilah** on
.

Hi! Can you check my answers please? Thanks! And, can you help me with 3 please? I have tried and tried but I cannot solve it can you explain how? Thanks!

1.

Given a scale factor of 2, find the coordinates for the dilation of the line segment with endpoints (–1, 2) and (3, –3). (1 point)

(–2, 4) and (6, 6)

(2, 4) and (6, 6)

(–2, 4) and (6, –6)

(2, –1) and (–3, 3)

2.

Given a scale factor of 1 over 2 , find the coordinates for the dilation of the triangle with vertices at (0, 0), (0, 2) and (4, 0). (1 point)

(0, 0), (0, 4), (8, 0)

(0, 0), (0, 1), (2, 0)

(1/2, 1/2), (1/2, 1), (2, 1/2)

(2, 2), (2, 4), (8, 2)

3.

Gina uses a magnifying glass to look at bugs. A caterpillar that is 2 inches long appears 4.5 inches long through the glass. What is the scale factor? (1 point)

2.25

0.4

9

2.5

My answers:

1.(–2, 4) and (6, –6)

2.(0, 0), (0, 1), (2, 0)

3. ?????