Transformation Review

When a figure is translated down what happens?

• You subtract from the y-value

• You add to the y-value

• You subtract from the x-value

• You add to the x-value

What is (-9, 8) reflected across the x axis?

• (-9, 8)

• (-9, -8)

• (8, -9)

• 9, 8)

What is (5, -3) reflected across the x and then the y?

• (-5, 3)

• (-5, 3)

• (5, 3)

• (-3, 5)

What is a dilation?

• flip

• turn

• slide

• Shrinking or expanding

Rectangle A'B'C'D' is similar to rectangle ABCD. What transformations were used to get these similar shapes?

• a translation 8 units to the left, then a dilation by a scale factor of 1/2 with a center of dilation at the origin

• a reflection over the y-axis, then a dilation by a scale factor of 1/2 with a center of dilation at the origin

• a dilation by a scale factor of 1/2 with a center of dilation at the origin, then a 90 degree counterclockwise rotation about the origin

• a 90 degree counterclockwise rotation about the origin, then a dilation by a scale factor of 1/2 with a center of dilation at the origin

Triangle F and triangle G are shown. Which sequence does NOT transform triangle F to triangle G?

• A 180 degree rotation clockwise

• A 180 degree rotation counter-clockwise

• A reflection over the x-axis and a reflection over the y-axis

• A reflection over the y-axis and a 90 degree rotation clockwise

Two transformations are performed to a figure on the coordinate plane. The first transformation is a translation 8 units to the left. The second transformation resulted in a shape similar to the first shape. What type of transformation would cause this?

• 90 degree rotation clockwise

• dilation with scale factor of 1

• dilation with scale factor of 1/2

• reflection across the x-axis

Point H(-4,6) is plotted on the coordinate plane and will go through the following transformations:

-Translation 3 units down and 6 units right

-Reflection across the y-axis

180 degree rotation.

What is the new coordinate for H'?

• (-6,-4)

• (7,-12)

• (2,-3)

• (8,2)

A triangle has vertices A(-1,1), B(-2,1), C(-1,4) and is translated. The image of vertex A is (3,-1). Determine the coordinates of B' and C'

• B'(2,2) C'(3,6)

• B'(2,-1) C'(3,2)

• B'(-5,-1) C'(-5,-1)

• B'(4,-1) C'(3,3)

What is the value of y in the image below?

• 9

• 3

• 6

• 12