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Find g(x), where g(x) is the reflection across the y-axis of f(x)=–2x–8.g(x)=2x+8g(x)=2x–8g(x)=–2x–8g(x)=–2x+8Submit

Question

Find g(x), where g(x) is the reflection across the y-axis of f(x)=–2x–8.g(x)=2x+8g(x)=2x–8g(x)=–2x–8g(x)=–2x+8Submit

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Solution

The reflection of a function across the y-axis is found by replacing x with -x in the function. So, if f(x) = -2x - 8, then the reflection of f(x) across the y-axis, g(x), is found by replacing x with -x in f(x).

So, g(x) = -2(-x) - 8 = 2x - 8.

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