f(x)=5x-9 what is f(x)=6
f(x) = 6 means that we want to sub 6 for f(x) and solve for x.....so we have
6 = 5x - 9 add 9 to both sides
15 = 5x divide both sides by 5
3 = x
that is not how you do it
Um, no, CPhill is correct, unless the problem was mistyped...
