If f(x) = 5x − 3, which expression represents its inverse function?
The inverse of f(x) = 5x - 3 is:
\(f^{-1} (x) = \frac{3}{5} + \frac{x}{5}\)
Answer:
inverse of function is \(\frac{x+3}{5}\).
Step-by-step explanation:
Given:If f(x) = 5x − 3
To find: which expression represents its inverse function.
Solution We have given that
f(x) = 5x − 3
Step 1: take f(x) = y
y = 5x -3.
Step 2 : Interchange the x and y
x = 5y -3.
Solve for y
On adding both sides by number 3
x + 3 = 5y.
On dividing both sides by 5
y = \(\frac{x+3}{5}\).
Here y = \(f(x)^{-1}\) = \(\frac{x+3}{5}\).
Therefore, inverse of function is \(\frac{x+3}{5}\).