Kevin S. answered 11/08/12
Tutor
5
(4)
Generally, an function in terms of x, such as f(x), can ba written from an equation that can be set into y=(something in terms of x).
In this case, we want to manipulate the equation until we get the form y= :
4x + y = -10
-4x -4x
y = -4x - 10
Substituting f(x) in for y,
f(x) = -4x - 10