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 (x, y).

Front

What are the four quadrants of the coordinate plane?

Back

1st Quadrant: (+, +), 2nd Quadrant: (-, +), 3rd Quadrant: (-, -), 4th Quadrant: (+, -).

Front

How do you find the distance between two points on the same horizontal line?

Back

Subtract the x-coordinates and take the absolute value. Example: Distance between (-3,5) and (7,5) is |7 - (-3)| = 10.

Front

What is the formula for the perimeter of a square?

Back

Perimeter = 4 × side length. Example: For a square with side length 6, Perimeter = 4 × 6 = 24.

Front

What is the formula for the area of a rectangle?

Back

Area = length × width. Example: For a rectangle with length 3 and width 2, Area = 3 × 2 = 6.

Front

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

Back

The y-coordinate changes sign. Example: (4, 9) reflected over the x-axis becomes (4, -9).

Front

What is the x-axis?

Back

The horizontal line in the coordinate plane where y = 0.

Front

What is the y-axis?

Back

The vertical line in the coordinate plane where x = 0.

Front

How do you identify the quadrant of a point (x, y)?

Back

Check the signs of x and y: (+, +) = 1st, (-, +) = 2nd, (-, -) = 3rd, (+, -) = 4th.

Front

What is an ordered pair?

Back

A pair of numbers (x, y) that represent a point on the coordinate plane.