![]() ![]() x = 11 and 13 are the parabola's x-intercepts. This method may work for simple quadratic equations, especially in vertex form, but will prove exceedingly difficult for more complicated ones. Simply set f(x) = 0 and solve the equation.Otherwise, solve for your x intercepts with one of the following methods: If your parabola has a vertex opens upward and has a vertex above the x axis or if it opens downward and has a vertex below the x axis, it won't have any x intercepts. However, not all parabolas have x-intercepts. Even if you're not to find them, these two points can be invaluable for drawing an accurate parabola. X Research source Often, on schoolwork, you'll be asked to find a parabola's x-intercepts (which are either one or two points where the parabola meets the x axis). If necessary, find and plot x intercepts. ![]() The coordinates of the vertex in standard form are given by: h = -b/2a and k = f(h), while in vertex form, h and k are specified in the equation.
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