Reflections

Front

What is the equation for the line of reflection across the line y=x?

Back

y=x

Front

What is the reflection of a point across the x-axis?

Back

The y-coordinate changes sign.

Front

If E(0, 2) is reflected across y = x, what are the coordinates of E'?

Back

(2, 0)

Front

If F(7, -5) is reflected across y = -x, what are the coordinates of F'?

Back

(5, -7)

Front

What axis is the triangle being reflected over if the answer is y-axis?

Back

y-axis

Front

What is the reflection of a point (x, y) across the line y=x?

Back

(y, x)

Front

What is the reflection of a point (x, y) across the y-axis?

Back

(-x, y)

Front

What is the reflection of a point (x, y) across the x-axis?

Back

(x, -y)

Front

What is the general rule for reflecting a point across the line y=-x?

Back

(y, x) with both coordinates changing signs.

Front

What is the effect of reflecting a shape across the y-axis?

Back

The x-coordinates of all points change sign.