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Home > A2C > Chapter 4 > Lesson 4.2.4 > Problem 4-121


For each equation below, find the - and -intercepts and the locator point , then write the equations in graphing form.

  1. y-intercept:

    You will need to factor. There is only one x-intercept.


    Since there is only one x-intercept, the vertex must be at the x-intercept. To find the equation in graphing form, use the equation .


  1. Start by finding the x- and y-intercepts.

    To find the x-coordinate of the vertex, average the x-intercepts.

    To find the y-coordinate of the vertex, substitute the x-coordinate of the vertex into the given equation and solve for y.

    Now write the equation in graphing form.