Reflections

Front

What is the rule for reflecting a point (x, y) across the y-axis?

Back

(x, y) → (-x, y)

Front

What axis is the image reflected over when reflecting across the x-axis?

Back

X-axis

Front

What is the rule for reflecting a point (x, y) across the x-axis?

Back

(x, y) → (x, -y)

Front

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

Back

(1, -4)

Front

What axis is the image reflected over when reflecting across the y-axis?

Back

Y-axis

Front

What is the general rule for reflecting a point (x, y) across the origin?

Back

(x, y) → (-x, -y)

Front

If a point A(3, 2) is reflected across the y-axis, what are the coordinates of A'?

Back

(-3, 2)

Front

If a point B(-2, 5) is reflected across the x-axis, what are the coordinates of B'?

Back

(-2, -5)

Front

What happens to the x-coordinate of a point when it is reflected across the y-axis?

Back

The x-coordinate changes sign.

Front

What happens to the y-coordinate of a point when it is reflected across the x-axis?

Back

The y-coordinate changes sign.