# How do you use the vertical line test to show #x-y^2=0# is a function?

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To use the vertical line test to show that the equation x - y^2 = 0 represents a function, we need to verify that every vertical line intersects the graph of the equation at most once. Rearranging the equation to solve for y, we get y = ±√(x). Both the positive and negative square root functions pass the vertical line test individually, confirming that the equation represents a function. Therefore, x - y^2 = 0 is indeed 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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