A function assigns the values. The reflected function across the y-axis will be -2x.
A function assigns the value of each element of one set to the other specific element of another set.
Given that the linear function, f(x)=2x is needed to be reflected across the y-axis, therefore, the reflected function can be found by multiplying the function by -1. Therefore, the reflected function will be,
f(x) = 2x
Reflected function, g(x) = -1 × (2x) = -2x
Hence, the reflected function across the y-axis will be -2x.
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