Consider the function represented by the equation y – x – 4 = 0. What is the equation written in function notation, with x as the independent variable?

Question

asked Sep 18, 2020 69.1k views

1 Answer

Nagarajannd · Answer 1 · 2020-09-23T09:23:46+0000

Writing an equation in function notation, with x as the independent variable is the same as solving the equation for y.

So, we start with

y-x-4=0

and we move
-x-4 to the right hand side, i.e. we add
x+4 to both sides:

$y-x-4+(x+4)=0+(x+4) \iff y=x+4$