Question

Find g(x), where g(x) is the reflection across the y-axis of f(x)=x.
Write your answer in the form mx+b, where m and b are integers.

Answer 1

f(x)=x reflected across y-axis flips the angle, instead of growing in the positive x direction the line is dropping

g(x)=-x=-x+0
so k=-1
and b=0