Algebra and Trigonometry, 5th Edition

1.1 Introduction to Graphing

• Plot points.

• Determine whether an ordered pair is a solution of an equation.

• Find the x- and y-intercepts of an equation of the form $Ax+By=C$.

• Graph equations.

• Find the distance between two points in the plane and find the midpoint of a segment.

• Find an equation of a circle with a given center and radius, and given an equation of a circle in standard form, find the center and the radius.

• Graph equations of circles.

Graphs

Graphs provide a means of displaying, interpreting, and analyzing data in a visual format. It is not uncommon to open a newspaper or a magazine and encounter graphs. Examples of bar, line, and circle graphs are shown below.

Many real-world situations can be modeled, or described mathematically, ...