Dilations in the Coordinate Plane

he graph shows an image of a dilation about the origin with a scale factor of 2/1 .What are the coordinates of the pre-image of , point A?

(-8, -12)

What is the scale factor in the dilation if the coordinates of are (-7, 6) and the coordinates of are (-4, 3)?

1/3

A triangle with vertices at A(20, -30), B(10, -15), and C(5, -20) has been dilated with a center of dilation at the origin. The image of B, point , has the coordinates (2, -3). What is the scale factor of the dilation?

1/5

A quadrilateral with vertices at A(4, -4), B(4, -16), C(12, -16), and D(12, -4) has been dilated with a center at the origin. The image of D, point , has coordinates (36, -12). What is the scale factor of the dilation?

3

What is true about the dilation?

It has a scale factor between zero and one and is a reduction.

What is true about the dilation?

It is an enlargement with a scale factor greater than 1.

Triangle ABC is being dilated with the center of dilation at the origin. The image of C, point , has coordinates of (7.2, 3.6). What is the scale factor of the dilation and what are the coordinates of point ? a

The scale factor is 1.2 and the coordinates of point are (-3.6, 3.6).

The image of a triangle after it has been dilated with a center at the origin has vertices at (-12, 6), (6, -18), and . If the pre-image of , point A, has coordinates of (-18, 9) and the pre-image of , point C, has coordinates of (18, 12), which statements are true? Check all that apply

the coordinates of are (12, 8). the scale factor is .2/3 The coordinates of B are (9, -27).