Dilations — Unit test

Question 1

Parallelogram RSTU is rotated 45° clockwise using the origin as the center of rotation. Which graph shows the image of RSTU?

Revolt · Accepted Answer

On a coordinate plane, parallelogram R prime S prime T prime U prime has points (3.5, 1), (5.5, negative 1), (5.5, negative 4), (3.5, negative 2).

Question 2

What is the coordinate for the image of point H(2, –6) under a 90° clockwise rotation about the origin?

Revolt · Accepted Answer

H’(–6, –2)

Question 3

Triangle A is the pre-image in a translation, and triangle B is the image, as shown below.How was triangle A translated?

Revolt · Accepted Answer

six units right

Question 4

What is true about the dilation?

Revolt · Accepted Answer

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

Question 5

Triangle XYZ is reflected across the x-axis, and X = (–11, 8). What are the coordinates of X’ ?

Revolt · Accepted Answer

(–11, –8)

Dilations — Unit test Answers