6th Grade Math Textbook, Progress

Graph Reflections and Translations

14-6

Graph each point and its reflection across the indicated axis.

Use prime notation to write the coordinates of its reflection.

1. A(
   4,
   6), x-axis 2. B(
   5, 7), x-axis 3. C(1, 3), x-axis


2. D(
   8,
   2), y-axis 5. E(4,
   9), y-axis 6. F(10, 5), y-axis


3. G(0,
   9), x-axis 8. H(14, 0), y-axis 9. K(5,
   9), x-axis

A reflection is a transformation that flips a figure over a line called a

line of reflection. A figure and its reflection are congruent.

You can draw the reflection of a plane figure on a coordinate plane. When

you reflect a figure, you can flip it across the x-axis or the y-axis.

The figure you get after a transformation is the image of the original figure.

Use prime notation, P′, to identify an image point. Read P′as “Pprime.”

Graph P(
2, 
3) and its

reflection across the x-axis.

Write the coordinates of its

reflection.

P(
2, 
3) P′(
2, 3)

Graph the reflection

of 
ABCacross the

y-axis. Use prime

notation to write

the coordinates of

its reflection.

A(4, 
2), B(3, 2), C(1, 1) A′(
4, 
2), B′(
3, 2), C′(
1, 1)

Pis 3 units above

the x-axis, so P′is

3 units belowthe

x-axis.

Ais 4 units to the left

of the y-axis, so A′is

4 units to the rightof

the y-axis.

Reflect the other

vertices. Draw


A′B′C′.

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