Warm-Up Review for QUEST 6.1-6.4

When reflecting a point over the line y=x, _____________.

• change the sign of the x-coordinate

• change the sign of the y-coordinate

• change the sign of both coordinates

• the x-coordinate and y-coordinate switch places.

When reflecting a point over the x-axis, _____________.

• change the sign of the x-coordinate

• change the sign of the y-coordinate

• change the sign of both coordinates

• the x-coordinate and y-coordinate switch places.

When reflecting a point over the y-axis, _____________.

• change the sign of the x-coordinate

• change the sign of the y-coordinate

• change the sign of both coordinates

• the x-coordinate and y-coordinate switch places.

What is the location of A' if A(-8, 2) is reflected over the x-axis?

• (8, 2)

• (-8, -2)

• (8, -2)

• (2, -8)

What is the location of A' if A(-8, 2) is reflected over the line y=x?

• (8, 2)

• (-8, -2)

• (8, -2)

• (2, -8)

What is the location of A' if A(-8, 2) is reflected over the y-axis?

• (8, 2)

• (-8, -2)

• (8, -2)

• (2, -8)

Parallel lines have ___________ slopes.

• equal

• opposite

• opposite-reciprocal

• perpendicular

Perpendicular lines have ___________ slopes.

• equal

• opposite

• opposite-reciprocal

• parallel

When reflecting a preimage over a line, the line of reflection is the ____________________ of any segment that connects a pair of corresponding points.

• midpoint

• perpendicular-bisector

• rotation

• translation

Solve for x.

• x = 20

• x = 400

• x = 26

• x = 7.46