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How would I find what 'a' and 'q' is in the equation of y=a(x)^2+q when I'm given 2 plots?

Example:Find 'a' and 'q' so that a parabola y=ax^2+q passes through each pair.

a)(-3,11)and(4,18)

if you could give me step by step explanation that would be much appreciated.

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# Homework Help: Quadratic Equations with 2 plots

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