SOLUTION: What happens to the graph of a quadratic funtion when a constant is subtracted from the output?

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When you add or subtract you are affecting the y value of every point.
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If you subtract a negative number you are adding to all the y-values and
the graph will move upward.
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If you subtract a positive number you are subtracting from all the y-values
and the graph will move downward.
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Cheers,
Stan H.