Rewrite the equation 4x - 10y = 11 as a function of x
Rule:
1. Solve for y.
2. Replace y by f(x)
4x - 10y = 11
Add -4x to both sides
-10y = 11 - 4x
Multiply every term by -1 so the term on left will be positive.
10y = -11 + 4x
Swapping the terms on the right eliminates the need for a
sign in front of the expression.
10y = 4x - 11
Divide both sides by 10
=
Cancel the 10's on the left, and you have
y =
Now all you do is replace the letter "y" by "f(x)"
f(x) =
That's the answer.
Edwin
