Math Problem Statement

Find the inverse function in slope-intercept form (mx+b): f, of, x, equals, 2, x, minus, 14 f(x)= 2x−14

Solution

To find the inverse of the function f(x)=2x14f(x) = 2x - 14, follow these steps:

Step 1: Replace f(x)f(x) with yy

We begin by rewriting the function in terms of yy.

y=2x14y = 2x - 14

Step 2: Swap xx and yy

Now, switch xx and yy to find the inverse function:

x=2y14x = 2y - 14

Step 3: Solve for yy

Next, solve for yy:

x+14=2yx + 14 = 2y

y=x+142y = \frac{x + 14}{2}

Step 4: Replace yy with f1(x)f^{-1}(x)

Now, write the inverse function as:

f1(x)=x+142f^{-1}(x) = \frac{x + 14}{2}

Final Answer in slope-intercept form:

f1(x)=12x+7f^{-1}(x) = \frac{1}{2}x + 7

Would you like more details or have any questions about this process?


Here are 5 related questions to expand your understanding:

  1. How do you verify that two functions are inverses of each other?
  2. What is the geometric interpretation of a function and its inverse?
  3. How would you find the inverse of a quadratic function?
  4. Can every function have an inverse? Why or why not?
  5. What is the domain and range of f1(x)=12x+7f^{-1}(x) = \frac{1}{2}x + 7?

Tip: When finding an inverse function, always make sure the original function is one-to-one to ensure the inverse exists.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Algebra
Inverse Functions
Linear Functions

Formulas

f(x) = mx + b
f^(-1)(x) = (x + b)/m

Theorems

Inverse Function Theorem

Suitable Grade Level

Grades 9-12