Reflections

Front

What is a reflection?

Back

When you flip or mirror an object across a line.

Front

What is the rule for reflecting across the y-axis?

Back

(x, y) → (-x, y)

Front

Reflect the point (2, -4) over the y-axis. What is the new point?

Back

(-2, -4)

Front

Reflect the point (3, -6) over the x-axis. What is the new point?

Back

(3, 6)

Front

If the dotted figure is the image, the original figure was reflected over the ...?

Back

y-axis

Front

What is the rule for reflecting across the x-axis?

Back

(x, y) → (x, -y)

Front

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

Back

The x-coordinate changes sign.

Front

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

Back

The y-coordinate changes sign.

Front

If a point (a, b) is reflected over the line y = x, what are the new coordinates?

Back

(b, a)

Front

What is the reflection of the point (-5, 3) over the y-axis?

Back

(5, 3)