Translations & Reflections Practice

Front

What is a reflection in geometry?

Back

When you flip or mirror an object across a line.

Front

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

Back

The y-coordinate changes sign: (x, y) becomes (x, -y).

Front

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

Back

The x-coordinate changes sign: (x, y) becomes (-x, y).

Front

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

Back

The coordinates switch places: (x, y) becomes (y, x).

Front

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

Back

The coordinates switch places and change signs: (x, y) becomes (-y, -x).

Front

If point A (-3, 4) is reflected over the line y = x, what are the coordinates of A’?

Back

(4, -3)

Front

If point B (2, 7) is reflected over the x-axis, what will it become?

Back

(2, -7)

Front

What is the line of reflection for x = 3?

Back

A vertical line that passes through the point (3, y) for all y.

Front

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

Back

The x-coordinate changes sign.

Front

What is the effect of reflecting a point over the x-axis?

Back

The y-coordinate changes sign.