Square Root Functions

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What is a square root function?

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What is the general form of a square root function?

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What does the parameter 'a' in the square root function affect?

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The parameter 'a' affects the vertical stretch or compression of the graph. If 'a' is positive, the graph opens upwards; if 'a' is negative, it opens downwards.

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The value of 'h' shifts the graph horizontally. If 'h' is positive, the graph shifts to the right; if 'h' is negative, it shifts to the left.

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What effect does 'k' have in the square root function?

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The value of 'k' shifts the graph vertically. If 'k' is positive, the graph shifts up; if 'k' is negative, it shifts down.

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This equation represents a square root function that opens downwards, with a vertex at (4, 0).