Answer: [tex]f^{-1}[/tex] (x) = [tex]\frac{x+10}{7}[/tex]
Step-by-step explanation:
To find the inverse , all we need do is to make x the subject of the formula.
y = 7x - 10
Add 10 to both sides
y + 10 = 7x
divide both sides by 7
Therefore:
x = y + 10 / 7 , that is
[tex]f^{-1}[/tex] (x) = [tex]\frac{x+10}{7}[/tex]
