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Functions | algebra 2 khan academy. Sal walks through several examples of how to write g(x) implicitly in terms f(x) when is a shift or reflection f(x). The graph of y=f(x)+k (where k is a real number) same as y=f(x) only it's shifted up (when k>0) or down k<0).
Scaling functions horizontally. Relations and functions watch the next lesson. Piecewise function example watch the next lesson.
Functions and their graphs.