CP Math 8 Mid-Term Exam

Triangle ABC is dilated by a scale factor of 3. Which is an algebraic representation of the dilation?

• (3x, 3y) → (x, y)

• (x, y) → (x+3, y-3)

• (x, y) → (0.33x, 0.33y)

• (x, y) → (3x, 3y)

A turn is also called a ___________.

• Translation

• Reflection

• Rotation

• Transformation

When you translate, (x-4,y) will move _____.

• 4 units right

• 4 units left

• 4 units up

• 4 units down

When you translate, (x,y+6) will move _____.

• 6 units right

• 6 units left

• 6 units up

• 6 units down

Dilate the point (6, 3) by a scale factor of 3. 

• (9, 6)

• (18, 9)

• (2, 1)

• (9, 9)

Rotate the point (-3,-4) around the origin 180 degrees. State the image of the point.

• (-4,-3)

• (-4,3)

• (4,-3)

• (3,4)

Reflect the point (2, -4) over the y-axis.

• (-4, 2)

• (-2, 4)

• (-2, -4)

• (2, 4)

The point (3,8) is translated 2 right and 5 down. What are coordinates of the image?

• (1,3)

• (5,3)

• (5,13)

• (1,13)

Which of the following terms describes the relationship between angle 3 and angle 7

• alternate exterior angles

• alternate interior angles

• corresponding angles

• vertical angles

Classify angles 6 and 8

• corresponding angles

• alternate exterior algles

• vertical angles

• alternate interior angles

• supplementary angles