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# Practice: Reflecting Points in the Coordinate Plane - reflecting a point over a line calculator Name:_____________________________________ Date:_________________________
Practice: Reflecting Points in the Coordinate
Plane
Graph each point. Then reflect the point in the x-axis. Record the coordinates of
the reflection.
? A (1,3), Reflection: _____________
? B (-2,-2) Reflection: _____________
? C (-4,5) Reflection: _____________
? D (2, -5) Reflection: _____________
Graph each point. Then reflect the point in the y-axis. Record the coordinates of
the reflection.
? A (1,3), Reflection: _____________
? B (-2,-2) Reflection: _____________
? C (-4,5) Reflection: _____________
? D (2, -5) Reflection: ____________
Reflect each point in the x-axis and y-axis
Ordered Pair Reflection in the x-axis Reflection in the y-axis
(-12,13)
(4,-9)
(-10,-8)
? K. Coners, 2015 www.tothesquareinch.com
Name:_____________________________________ Date:___________A__n_s__w__e__r__K__e_ y
Reflecting Points in the Coordinate Plane
1. In your own words, describe what the word reflection means.
2. You can reflect ordered pairs the x-axis and y-axis.
3. Another term for reflection is mirror image.
> B is a reflection
of A in the x - axis
wA
> D is a reflection
of C in the y- axis wB
wC wD
4. To reflect a point in the x-axis, the x-coordinate remains the same and
the y-coordinate is negated.
5. To reflect a point in the y-axis, the y-coordinate remains the same and
the x-coordinate is negated.
6. Graph (4,5) on the grid below. Then reflect it in the x-axis. What are the
coordinates of the reflection? (4,-5)
7. Graph (-2,-4) on the grid below. Then reflect it in the y-axis. What are
the coordinates of the reflection? (2,-4)
w(4,5)
w(-2,-4) w(2,-4)
w(4,-5)
? K. Coners, 2015 www.tothesquareinch.com

What is a line of reflection over x axis?Reflection over x-axis (line of reflection: x - axis) Summary: Reflection-flip in which image has opposite orientation Transformation- A change in position, shape or size of a geometric figure Point (x,y) reflects to point (x,-y) Reflection over x-axis (line of reflection: x - axis) Point (x,y) reflects to point (-x,y)

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