Math CentralQuandaries & Queries


Question from Marsia, a student:

Explain how you can shift a parabola up two units (y axis).


If I have a function y = f(x) and I shift it upwards two units, then I have the function y = f(x) + 2, because y is always 2 units higher than it would be with just f(x).

For example, if f(x) = -3x + 9, then shifting this two units up is just -3x + 11.

Hope this helps,
Stephen La Rocque.

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