# Is #y=x^2 + 3x - 15# a function?

graph{y=x^2+3x-15 [-33.55, 31.4, -23.03, 9.46]}

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Yes, the quadratic equation (y = x^2 + 3x - 15) is a function.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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