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Unformatted text preview: graphing in this section. In fact, this section is here only to
acknowledge that we’ve already looked at these equations and functions in the previous chapter.
Here are the appropriate sections to see for these.
Lines : Graphing and Functions – Lines
Circles : Graphing and Functions – Circles
Piecewise Functions : Graphing and Functions – Graphing Functions © 2007 Paul Dawkins 205 http://tutorial.math.lamar.edu/terms.aspx College Algebra Parabolas
In this section we want to look at the graph of a quadratic function. The most general form of a
quadratic function is, f ( x ) = ax 2 + bx + c The graphs of quadratic functions are called parabolas. Here are some examples of parabolas. All parabolas are vaguely “U” shaped and the will have a highest or lowest point that is called the
vertex. Parabolas may open up or down and may or may not have x-intercepts and they will
always have a single y-intercept.
Note as well that a parabola that opens down will always open down and a parabola...
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- Spring '12