The Coordinate Plane Unit Review

Front

What is the vertical number line in the coordinate plane called?

Back

y-axis

Front

Reflecting over the y-axis changes the ____-_____________.

Back

x-coordinate

Front

Reflect the point (-2, 7) about the y-axis. What are the new coordinates?

Back

(2, 7)

Front

If you reflect point D (2 ¼, -2) across the x-axis, what are the new coordinates?

Back

(2 ¼, 2)

Front

What is the distance between points (-7, 8) and (2, 8)?

Back

9 units

Front

What is the horizontal number line in the coordinate plane called?

Back

x-axis

Front

What are the four sections of the coordinate plane called?

Back

quadrants

Front

What is the point called where the x-axis and y-axis intersect?

Back

origin

Front

How do you find the distance between two points (x1, y1) and (x2, y2)?

Back

Use the distance formula: √((x2 - x1)² + (y2 - y1)²).

Front

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

Back

The y-coordinate changes sign.