The Coordinate Plane

Front

What is the coordinate plane?

Back

A two-dimensional surface formed by the intersection of a horizontal line (X-axis) and a vertical line (Y-axis), used to locate points using ordered pairs.

Front

What are ordered pairs?

Back

A pair of numbers (x, y) that represent a point's position on the coordinate plane, where 'x' is the horizontal position and 'y' is the vertical position.

Front

What does the X-axis represent?

Back

The horizontal line on the coordinate plane where the value of 'y' is zero.

Front

What does the Y-axis represent?

Back

The vertical line on the coordinate plane where the value of 'x' is zero.

Front

What are the four quadrants of the coordinate plane?

Back

Quadrant I (positive x, positive y), Quadrant II (negative x, positive y), Quadrant III (negative x, negative y), Quadrant IV (positive x, negative y).

Front

Which quadrant contains the point (1, -3)?

Back

Quadrant IV.

Front

How do you reflect a point over the X-axis?

Back

Change the sign of the y-coordinate of the point.

Front

What is the reflection of the point (9, -3) over the X-axis?

Back

(9, 3).

Front

What is the reflection of the point (-4, 0) over the Y-axis?

Back

(4, 0).

Front

What is the distance between the points (2, 3) and (2, -1)?

Back

4 units (the distance is the difference in the y-coordinates).