U9D2 Reflection

Front

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

Back

The y-coordinate changes to its opposite sign.

Front

What are the coordinates of vertex P after being reflected using the rule (x, y) → (x, -y) if the original coordinates are (4, 1)?

Back

(4, -1)

Front

What happens to the x-coordinate of a point when it reflects over the x-axis?

Back

The x-coordinate stays the same.

Front

What are the coordinates of vertex M after being reflected using the rule (x, y) → (-x, y) if the original coordinates are (3, 0)?

Back

(-3, 0)

Front

True or False: The blue triangle is reflected over the x-axis if its coordinates change from (x, y) to (x, -y).

Back

True

Front

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

Back

(x, y) → (x, -y)

Front

If a point has coordinates (5, 2), what are the coordinates after reflecting over the x-axis?

Back

(5, -2)

Front

If a point has coordinates (-3, 4), what are the coordinates after reflecting over the x-axis?

Back

(-3, -4)

Front

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

Back

(x, y) → (-x, y)

Front

If a point has coordinates (0, 7), what are the coordinates after reflecting over the y-axis?

Back

(0, 7) (stays the same)