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See Lecture 8.3 for shapes of graphs of standard functions

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This is a non-calculator question.

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Several graphs are drawn. Student should select those that are quadratics.

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Which of the following look like graphs of a quadratic function?

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{plot(n[0],a[0],b[0],c[0])}

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{plot(n[1],-a[1],b[1],c[1])}

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{plot(n[2],a[2],b[2],c[2])}

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{plot(n[3],-a[3],b[3],c[3])}

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{plot(n[4],a[4],b[4],c[4])}

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