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Algebra I

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how do I graph the quadratic function in intercept form for y=(x+3)(x-5)

  • Algebra I -

    you can see the x-intercepts right off. They are the roots: -3 and 5

    As for the y-intercept, that is just -15

    For excellent graphing help visit

    http://rechneronline.de/function-graphs/

    and type in your function, but express all operators explicitly:

    (x+3)*(x-5)

    To get a better picture, increase the x range to -10 to 10 and the y-range to -20 to 20

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