Name:    Try It Out -- Chapter 7, Lesson 3

Matching

Match the correct question to its answer.
 a. Change the value of the y-coordinate to its opposite sign. b. Change the value of the x-coordinate to its opposite sign. c. Exchange the x and y coordinates, and change the value of the first coordinate to its opposite sign.

1.

How do you determine the coordinates of a point after a reflection in the y-axis?

2.

How do you determine the coordinates of a point after a 90° counterclockwise rotation about the origin?

3.

How do you determine the coordinates of a point after a reflection in the x-axis?

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.

4.

Given the point A(-3, 5), determine the coordinates of point A¢ after a reflection in the y-axis.
 a. (-3, -5) b. (3, 5) c. (5, -3)

5.

Given the point B(5, -2), determine the coordinates of point B¢ after a reflection in the x-axis.
 a. (-5, -2) b. (-2, 5) c. (5, 2)

6.

Given the point C(4, 2), determine the coordinates of point C¢ after a ccw rotation of 90°.
 a. (-4, 2) b. (2, 4) c. (-2, 4)

7.

Given the point D(5, 2), determine the coordinates of point D¢ after a reflection in the line that passes through the origin and (1, 1).
 a. (-5, -2) b. (2, 5) c. (-2, 5) d. (5, -2)

8.

Given the point B(6, 2), determine the coordinates of point B¢ after a 180° ccw rotation..
 a. (-6, -2) b. (6, 2) c. (2, 6) d. (-2, 6)

9.

Given the point A(3, 5), determine the coordinates of point A¢ after a cw rotation of 270°.
 a. (5, 3) b. (-3, 5) c. (-5, 3)

10.

The quadrilateral ABCD has vertices at A(1, 1), B(1, 4), C(5, 4), and D(5, 1).  Determine the coordinates of B¢¢ after a reflection in the x-axis, followed by a reflection in the y-axis.
 a. (-1, -4) b. (1, -4) c. (-1, 4) d. (1, 4)