Find the inverse function of f fx 7x 8 f1x Find all real s

Find the inverse function of f. f(x) = 7x + 8. f^-1(x) =_______Find all real solutions of the quadratic equation. (Enter your answers as a comma-separated list. If there is no real solution, enter NO REAL SOLUTION.) 3x^2 + 17 x + 14 =0. x =__________.

Solution

Solution:

f(x) = 7x+8

Let y = f(x) => x = f^(-1)(y)

Thus   y = 7x+8

or (y-8)/7 = x

or f^-1 (y) = (y-8)/7

Therefore f^(-1) (x) = (x-8) / 7 Ans.