Given the function f(x) = 2(x − 1)2 + 1, indicate the shifts that will affect the location of the vertex, and explain what effect they will have. Use complete sentences. f(x+3) f(x) + 3 f(3x) 3•f(x)
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vertex (h,k) h= 1 k= 1 so vertex (1,1)
f(x+3) when you add x in f(x) with a positive number, the graph shifts left . so f(x+3) shifts the vertex left by 3 units.
when you add a positive number to f(x), the graph moves up. so f(x) + 3 shifts the vertex up by 3 units.
when you multiply the constant with x in f(x), the vertex do not change. However, the graph is stretched horizontally by a factor of 3
When you multiply a positive number (except fractions with numerators <denominators) to f(x) , the graph is stretched vertically. However, it does not affect the vertex. It's still at (1,1)
thanks! c:
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