What is the scale factor in the following dilation? The smaller triangle is the pre-image.

Question

Two triangles are shown on a grid.The smaller triangle has:
· a vertex two units from the right of the bottom left corner of the grid and one unit up from the bottom of the grid.
· a vertex five units from the right of the bottom left corner of the grid and one unit up from the bottom of the grid.
· a vertex three and one-half units from the right of the bottom left corner of the grid and four units up from the bottom of the grid.
The larger triangle has:
· a vertex four units from the right of the bottom left corner of the grid and two units up from the bottom of the grid.
· a vertex ten units from the right of the bottom left corner of the grid and two units up from the bottom of the grid.
· a vertex seven units from the right of the bottom left corner of the grid and eight units up from the bottom of the grid.
(1 point)
Responses

3
3

The fraction is 1 over 3.
Image with alt text: The fraction is 1 over 3.

2
2

one-half

Answer 1

The scale factor is 2.