Reflections Over y=x

What is a reflection?

• When you turn an object around a point.

• When you flip or mirror an object across a line.

• When you slide an object from one place to another.

• When you resize an object.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the rule for a reflection across the y = x line?

• (x, y) becomes (x, -y)

• (x, y) becomes (-x, y)

• (x, y) becomes (-x, -y)

• (x, y) becomes (y, x)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Which option shows the coordinates of A' when reflected over the line y=x?

• A' (-2, 3)

• A' (2, -3)

• A' (3, 2)

• A' (2, 3)

What will be the coordinates of B' when reflected over the line y=x?

• B' (1, 3)

• B' (3, 1)

• B' (3, -1)

• B' (-3, 1)

What is the new location of image point C' when reflected over the line y=x ?

• C' (0, 2)

• C' (0, -2)

• C' (2, 0)

• C' (0, 0)

Reflect the point (2, -4) over the line y=x. (Think about your rule for reflections across y=x...)

• (2, 4)

• (-2, 4)

• (-2, -4)

• (-4, 2)