Coordinate Planes Review

Front

What is a coordinate plane?

Back

A coordinate plane is a two-dimensional surface formed by the intersection of a horizontal line (x-axis) and a vertical line (y-axis). Each point on the plane is defined by an ordered pair of numbers (x, y).

Front

What are the four quadrants of a coordinate plane?

Back

The four quadrants are: Quadrant I (x > 0, y > 0), Quadrant II (x < 0, y > 0), Quadrant III (x < 0, y < 0), Quadrant IV (x > 0, y < 0).

Front

How do you find the distance between two points on a coordinate plane?

Back

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

Front

What does it mean for two points to be reflections across the y-axis?

Back

Two points are reflections across the y-axis if they have the same y-coordinate but opposite x-coordinates.

Front

What is the significance of negative coordinates in a coordinate plane?

Back

Negative coordinates indicate positions to the left of the y-axis (for x) or below the x-axis (for y).

Front

How do you determine which quadrant a point is in?

Back

Check the signs of the x and y coordinates: (+, +) = Quadrant I; (-, +) = Quadrant II; (-, -) = Quadrant III; (+, -) = Quadrant IV.

Front

What is the x-axis?

Back

The x-axis is the horizontal line on a coordinate plane where y = 0.

Front

What is the y-axis?

Back

The y-axis is the vertical line on a coordinate plane where x = 0.

Front

What is the origin in a coordinate plane?

Back

The origin is the point (0, 0) where the x-axis and y-axis intersect.

Front

How do you plot a point on a coordinate plane?

Back

Start at the origin, move along the x-axis to the x-coordinate, then move vertically to the y-coordinate.