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Home > INT3 > Chapter 2 > Lesson 2.2.4 > Problem 2-103


A parabola has vertex and contains the point . Homework Help ✎

  1. ​​If this parabola is a function, what is 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. Now, what is 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: INT3 2-103 HW eTool