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Home > CCA2 > Chapter 2 > Lesson 2.2.4 > Problem 2-146


A parabola has vertex and contains the point .

  1. If this parabola is a function, find its equation.

    Recall the standard form for the equation of a parabola:
    Substitute the appropriate values for the vertex , and and , then solve for .

    Refer to problem 2-127 in Lesson 2.2.3 if you need more help.

  2. Suppose this parabola is not a function, but is a “sleeping” parabola. Find its equation.

    Use the equation where the vertex is at .

    Use the eTool below to graph the equations.
    Click the link at right for the full version of the eTool: CCA2 2-146 HW eTool