Reflections

Front

What is the transformation rule for reflecting a point over the x-axis?

Back

(x, y) ----> (x, -y)

Front

What is the transformation rule for reflecting a point over the y-axis?

Back

(x, y) ----> (-x, y)

Front

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

Back

Y'(2, -3)

Front

What are the coordinates of the point K(1, 4) after reflecting it across the x-axis?

Back

K'(1, -4)

Front

Reflect the point (-7, 5) over the x-axis. What are the new coordinates?

Back

(-7, -5)

Front

What is the effect of reflecting a point over the x-axis on its y-coordinate?

Back

The y-coordinate changes sign.

Front

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

Back

The x-coordinate changes sign.

Front

How do you reflect a triangle across the x-axis?

Back

Reflect each vertex of the triangle across the x-axis using the transformation rule.

Front

What is the transformation rule for reflecting a point over the line y = x?

Back

(x, y) ----> (y, x)

Front

If a point A(3, 2) is reflected over the y-axis, what are the new coordinates?

Back

A'(-3, 2)