Reflection and Distance on Coordinate Plane

Front

What is the definition of a vertical line segment on the coordinate plane?

Back

A vertical line segment is a line segment that runs up and down, having the same x-coordinate for both endpoints.

Front

What is the definition of a horizontal line segment on the coordinate plane?

Back

A horizontal line segment is a line segment that runs left and right, having the same y-coordinate for both endpoints.

Front

How do you calculate the distance between two points on a vertical line segment?

Back

The distance is calculated by subtracting the y-coordinates of the two points.

Front

How do you calculate the distance between two points on a horizontal line segment?

Back

The distance is calculated by subtracting the x-coordinates of the two points.

Front

What is the reflection of a point (x, y) over the x-axis?

Back

The reflection is (x, -y).

Front

What is the reflection of a point (x, y) over the y-axis?

Back

The reflection is (-x, y).

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

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

Back

The y-coordinate changes sign.

Front

If point A is at (a, b), what is the reflection of A over the x-axis?

Back

The reflection of A is (a, -b).

Front

If point B is at (a, b), what is the reflection of B over the y-axis?

Back

The reflection of B is (-a, b).