Question

The normal line of a function `f` at `x = a` is the line perpendicular to the tangent line of `f` at `x = a`. Using the above definition and the fact that `g(−2) = −10`, find an equation of the normal line of the function `g` at `x = −2`?

Answer 1

This is a duplicate question. See https://socratic.org/questions/the-normal-line-of-a-function-f-at-x-a-is-the-line-perpendicular-to-the-tangent-