Minnesota MCA in High School Math Chapter 2

DOK: 2
1 pt

1.

If the figure below were reflected across the *u*-axis, what would be the coordinates of point *C*?

A

(2, -1)

B

(2, 1)

C

(-2, -1)

D

(-2, 1)

DOK: 2
1 pt

3.

Figure 1 goes through a transformation to form Figure 2. Which of the following descriptions fits the transformation(s) shown below?

A

reflection across the *x*-axis

B

reflection across the origin

C

180° clockwise rotation around the origin

D

translation right 4 units and down 4 units

DOK: 2
1 pt

4.

Sammy plots the point (−4, 3) on a coordinate grid. He reflects this point over the *y*-axis, then over the x-axis. What are the coordinates of the new reflected point?

A

(-4, -3)

B

(-4, 3)

C

(4, -3)

D

(4, 3)

DOK: 2
1 pt

7.

Figure 1 goes through a transformation to form figure 2. Which of the following descriptions fits the transformation shown?

A

reflection across the *y*-axis

B

270° clockwise rotation around the origin

C

translation right 3 units

D

90° clockwise rotation around the origin

DOK: 3
1 pt

9.

Describe the transformation needed for the pre-image to be transformed into the postimage, and determine if the two figures are still congruent or not.

A

Yes, the images are still congruent because all the side lengths and angle measurements are the same. The image has been rotated 180° and reflected across the *y*-axis.

B

Yes, the images are still congruent because all the side lengths and angle measurements are the same. The image has been reflected across the *x*-axis and then reflected across the *y*-axis.

C

Yes, the images are still congruent because all the side lengths and angle measurements are the same. The image has been rotated 270° and then reflected across a 45° line.

D

No, the images are not congruent because the side lengths and angle measurements have changed due to transformations. The image has been reflected across the *x*-axis and then reflected across the *y*-axis.