Transformations Unit Test Review

Which rule best represents the transformation shown here?

• A. (x, y) → (-x, -y)

• B. (x, y) → (x - 8, y + 3)

• C. (x, y) → (x + 8, y - 3)

• D. (x, y) → (8x, -3y)

Tyrell dilated a figure by a scale factor of 3/2. Which of the following is a true statement?

• A. The new figure will be smaller than the original figure.

• B. The perimeter of the new figure will be 3/2 times the perimeter of the original figure.

• C. The area of the new figure will be 3/2 times the area of the original figure.

• D. All of the above are true.

Which is the correct algebraic representation of the transformation shown?

• A. (x, y) → (y, -x)

• B. (x, y) → (-y, x)

• C. (x, y) → (-x, y)

• D. (x, y) → (-x, -y)

Luke is going to reflect point R(6, 10) over the y-axis. What are the coordinates for R'?

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The table shows the coordinates of a figure that was transformed. Which is a correct description of the transformation?

• Rotation 180° clockwise

• Reflection over the x-axis

• Translation 5 units left and 2 units down

• Translation 10 units left and 4 units down

If JKL is rotated 180° clockwise, which describes the location of J'?

• (-7, 6)

• (6, 7)

• (7, -6)

• (7, 6)

Tags

TEKS.MATH.G.3A

Which of the following is the correct algebraic representation for a translation 8 units right and 4 units down?

• (x + 8, y - 4)

• (x - 4, y + 8)

• (x - 8, y + 4)

• (8x, 4y)

Which of the following algebraic rules represents a dilation that is an enlargement?

• (1/3)x, (1/3)y

• (0.1x, 0.1y)

• (5/6)x, (5/6)y

• (5/2)x, (5/2)y

A figure is going to be dilated by a scale factor of 3.5. Which of the following describes the effect of the dilation on the area of the figure?

• The area will change by a factor of 3.5.

• The area will change by a factor of 7.

• The area will change by a factor of 12.25.

• The area will change by a factor of 49.

A figure on a coordinate plane was transformed using the rule (x, y) → (-x, y). Which best describes the transformation?

• A rotation 90° clockwise

• A reflection over the x-axis

• A rotation 180° clockwise

• A reflection over the y-axis