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Draw the graph of .

  1. What are the - and -intercepts?

    To find the -intercept, substitute for .

    To find the -intercepts, factor the equation and substitute for .

    The -intercept is and the -intercepts are and

  2. Where is the line of symmetry of this parabola? Write its equation.

    To find the line of symmetry, average the values of the -intercepts.


  1. What are the coordinates of the vertex?

    Substitute the value for the line of symmetry into the equation.

Use the eTool below to graph the equation.
Click the link at right for the full version of the eTool: INT3 2-31 HW eTool