Chapter 1 Summary and Review

Study Guide

KEY TERMS AND CONCEPTS EXAMPLES
SECTION 1.1: INTRODUCTION TO GRAPHING

Graphing Equations

To graph an equation is to make a drawing that represents the solutions of that equation. We can graph an equation by selecting values for one variable and finding the corresponding values for the other variable. We list the solutions (ordered pairs) in a table, plot the points, and draw the graph.

Graph: y=4−x2.

x y=4−x2 (x, y)
0 4 (0, 4)
−1 3 (−1, 3)
1 3 (1, 3)
−2 0 (−2, 0)
2 0 (2, 0)

Intercepts

An x-intercept is a point (a, 0).

To find a, let y=0 and solve for x.

A y-intercept is ...

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