Reflections

Front

What is the formula for a reflection over the x-axis?

Back

(x, y) → (x, -y)

Front

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

Back

(-2, -4)

Front

What is the Algebraic Notation for a reflection over the y-axis?

Back

(x, y) → (-x, y)

Front

Find K' if the point K(4, 1) is reflected across the x-axis.

Back

(4, -1)

Front

Reflections over the x-axis change the ____-__________.

Back

y-coordinate

Front

What is the formula for a reflection over the y-axis?

Back

(x, y) → (-x, y)

Front

Reflect the point (-3, 5) over the x-axis.

Back

(-3, -5)

Front

If a point (a, b) is reflected over the x-axis, what is the new point?

Back

(a, -b)

Front

What happens to the coordinates of a point when it is reflected over the y-axis?

Back

The x-coordinate changes sign.

Front

Reflect the point (0, 7) over the x-axis.

Back

(0, -7)