Precalculus » A. Functions » A.1. Rectangular Coordinates

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Plotting Points in the Cartesian Plane

• Overview
• Naming points using a graph
• Finding the coordinates of a point from a written description
• Determining the quadrant in which a point is located

Scatter Plots

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• Using scatter plots to make predictions

Finding Distances Using the Pythagorean Theorem

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• Find the distance between the two points
• Find the length of the side of the right triangle
• Show that the points form the vertices of a right triangle
• Word problems – Finding percent increase or decrease using a graph

Finding the Midpoint of a Line Segment

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• Find the midpoint of the line segment between two points
• Word problems – predicting sales using the midpoint

Translating Points in a Plane

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• Find the new coordinates of the translated polygon