Staar Questions Transformations

The tables show the ordered pairs that represent the vertices of Triangle 1 and its image, Triangle 2, after a dilation with the origin as the center of dilation. Which rule best represents the dilation that was applied to Triangle 1 to create Triangle 2?

• (x, y) → (0.2x, 0.2y)

• (x, y) → (5x, 5y)

• (x, y) → (8x, 8y)

• (x, y) → (10x, 10y)

Tags

8.3.C

Triangle KLM is rotated 270° clockwise about the origin to create triangle K’L’M’. Which rule describes the transformation that is applied to triangle KLM?

• (x, y) → (y, –x)

• (x, y) → (–x, –y)

• (x, y) → (–x, y)

• (x, y) → (–y, x)

Tags

8.10.C

Triangle 1 is dilated by a scale factor of 4.1 using the origin as the center of dilation to create Triangle 2. Which statement about the area and perimeter of Triangle 2 is true?

• The perimeter is 4.1 times the perimeter of Triangle 1, and the area is 4.1 times the area of Triangle 1.

• The perimeter is 8.2 times the perimeter of Triangle 1, and the area is 8.2 times the area of Triangle 1.

• The perimeter is 4.1 times the perimeter of Triangle 1, and the area is 16.81 times the area of Triangle 1.

• The perimeter is 16.4 times the perimeter of Triangle 1, and the area is 16.81 times the area of Triangle 1.

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8.10.D

A circle with center R(-4, -4) on a coordinate plane is transformed so that its image forms a circle with center R'(-4, 4). Which rules describe transformations that result in a circle with center R'? Select TWO correct answers.

• (x, y) → (x, y + 4)

• (x, y) → (–x, y)

• (x, y) → (x, y + 8)

• (x, y) → (x, –y)

• (x, y) → (–y, x)

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8.10.C

• A

• B

• C

• D

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Q10

• F

• G

• H

• J

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CCSS.HSG.CO.B.6

CCSS.8.G.A.2

Q21

• A

• B

• C

• D

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CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Identify the transformation from A to D.

• 90^o Clockwise Rotation

• 180^o Rotation

• 270^o Clockwise Rotation

• 360^o Rotation

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CCSS.HSG.CO.B.6

Identify the transformation from ABC to A'B'C'.

• 90^o clockwise rotation

• 90^o counter clockwise rotation

• Reflection across the y-axis

• Reflection across the x-axis

Tags

CCSS.8.G.A.3

Rectangles ABCD and A´B´C´D´ are shown on the coordinate plane. Which algebraic representation shows how the coordinates of rectangle A´B´C´D´ were found?

• (1/2x, 1/2y) -> (x,y)

• (x,y) -> (1/2x, 1/2y)

• (2x, 2y) -> (x,y)

• (x,y) -> (2x, 2y)

Tags

CCSS.HSG.CO.A.2