Reflections and Translations Review

Reflections

Reflecting Over the X-AXIS

• Keep X coordinate the same, CHANGE the Sign of Y

• Example 1: (4, 5) reflects over X-Axis to become (4,-5)

• Example 2: (1, -3) reflects over X-Axis to become (1, 3)

• Example 3: (-2,-4) reflects over X-Axis to become (-2, 4)

• Example 4: (5, 0) reflects over X-Axis to become (5,0)

Multiple Choice

What is the image of K(3,9) when it reflects over the X-axis?

• K'(3, 9)

• K'(3, -9)

Multiple Choice

What is the image of P(-2, -6) when it reflects over the X-axis?

• P'(-2, 6)

• P'(2, -6)

Multiple Choice

What Coordinate Changes When You Reflect Over the X-Axis?

• X

• Y

Multiple Choice

What is the Image of T(4, 0) when it reflects over the X-axis?

• T'(4, 0)

• T'(4,-0)

Reflecting Over the Y-Axis

• Change sign of the X Coordinate, keep the Y Coordinate the same

• Example 1: (2, 7) reflects over the Y-axis to become (-2,7)

• Example 2: (-3, -5) reflects over the Y-axis to become (3, -5)

• Example 3: (-2, 1) reflects over the Y-axis to become (2, 1)

• Example 4: (0,4) reflects over the Y-axis to become (0,4)

Multiple Choice

What is the image of W(-5,-2) when it reflects over the Y-Axis?

• W'(5,-2)

• W'(-5,2)

Multiple Choice

What is the image of R(2,-6)

• R'(2, 6)

• R'(-2, -6)

Multiple Select

What Coordinate Changes When You Reflect Over the Y-Axis

• X

• Y

Multiple Choice

What is the Image of H(0,-5) when it reflects over the Y-axis?

• H'(0,-5)

• H'(-0,-5)

Multiple Choice

What is a reflection?

• When you turn an object around a point.

• When you slide an object form one place to another.

• When you flip or mirror an object across a line.

• When you resize an object.

Multiple Choice

Which answer shows a reflection across the x-axis?

• a

• b

• c

• d

Multiple Choice

Which answer shows a reflection across the y-axis?

• a

• c

• d

• b

Multiple Choice

Triangle GHI is reflected across the x-axis.  What are the coordinates of I'?

• (-2, 6)

• (2, 6)

• (-6, -2)

• (6, 2)

Multiple Choice

Is this a reflection over the X-axis or Y-axis

• X axis

• Y axis

Multiple Choice

Is the reflection shown a reflection over the x or y axis?

• X axis

• Y axis

Multiple Choice

Is the reflection shown a reflection over the x or y axis?

• x axis

• y axis

Multiple Choice

Is the reflection shown a reflection over the x or y axis?

• x axis

• y axis

Multiple Choice

Which of the following describes a translation?

• flip

• turn

• slide

• expand

Multiple Choice

Which pair of shapes shows a translation?

Multiple Choice

Where would point J' be if you translated point J 5 units to the left and 2 units up?

• (5, 3)

• (3, -5)

• (-5, 3)

• (-3, 5)

Multiple Choice

How is triangle ABC being translated to triangle A'B'C'?

• up 3, left 8

• up 9, left 4

• down 3, right 8

• down 9, right 4

Multiple Choice

How would you translate point P to P'?

• Translate 2 units to the right and 8 units down

• Translate 3 units down and 2 units to the right

• Translate 4 units down and 4 units to the left

• Translate 8 units to the right and 2 units down

Multiple Choice

What is true about the image and pre-image in a translation?

• The image is larger than the pre-image

• The image is smaller than the pre-image

• The image and pre-image are congruent (or the same size)

Multiple Choice

Point K (4, 2) is translated using this rule:

(x, y)----> (x + 3, y - 1)

What are the coordinates of K'?

• (6, 3)

• (7, 3)

• (7, 1)

• (5, 3)

Multiple Choice

What rule translates the green shape to the blue shape?

• (x, y) --> (x - 3, y - 3)

• (x, y) --> (x + 3, y + 3)

• (x, y) --> (x + 2, y + 3)

• (x, y) --> (x - 2, y - 3)

Multiple Choice

Determine where Point X' would be if you translated Point X 3 units left and 9 units down.

• (-5, -4)

• (-1, -7)

• (-4, -5)

• (-1, 5)