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)
 



 
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