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
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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