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Select the correct answer.

If f(x) represents the function graph and we have the equation:
if (x - 4) * g(2) = (x + 4), which description represents the graph of function g?

A. a vertical transformation of function f 4 units down
B. a horizontal transformation of function f 4 units left
C. a horizontal transformation of function f 4 units right
D. a vertical transformation of function f 4 units up

1 Answer

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Final answer:

The equation suggests a transformation applied to the x-values of function f, indicating a horizontal transformation. The function has been shifted horizontally to the right by 4 units, so the correct answer is a horizontal transformation of function f 4 units right.

Step-by-step explanation:

Given the function equation (x - 4) * g(2) = (x + 4), we are looking to describe the transformation of function g compared to function f. This equation can be interpreted as a transformation applied to the x-values of the graph of function f, where function g at 2 is involved in the transformation from f to g.

If we distribute g(2) on the left side, we get g(2)x - 4g(2) = x + 4. If we assume g(2) is not equal to zero, this would imply that x is being transformed by a shift. To isolate x on one side, we would divide by g(2), leading to an equation that looks like x = (x + 4)/g(2) + 4, which indicates a horizontal shift. Since x - 4 changes to x + 4 when transformed to g, it means that the function has been shifted horizontally to the right by 4 units. Therefore, the correct description represents a horizontal transformation of function f 4 units right.

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