Finding a Quadratic Equation with the x-intercepts and Another Point.

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Presentation transcript:

Finding a Quadratic Equation with the x-intercepts and Another Point

Find a rule for the quadratic table below. Plot all the points Plug in the x-intercepts Sketch: Substitute into Factored Form: Plug in another point Solve for a Since we know the x- intercepts Equation: x-2012 y Use symmetry to find any missing x- intercepts (3,0) (-1,0) The “a” is the GCF

Finding a Quadratic Equation with the x-intercepts and Another Point Find a rule for the quadratic table below. Plug in the x-intercepts Substitute into Factored Form: Plug in another point Solve for a Since we know the x- intercepts Equation: x Y There may be a GCF (adjustment value) We need to solve for “a” but there are 3 variables