Math Problem Statement

Find the y-intercept of the function y = (3x - 3) / (x + 1).

Solution

Let's solve for the y-intercept of the given function:

y=3x3x+1y = \frac{3x - 3}{x + 1}

Step 1: Find the y-intercept

The y-intercept occurs when x=0x = 0. Substituting x=0x = 0 into the function:

y=3(0)30+1y = \frac{3(0) - 3}{0 + 1}

y=31=3y = \frac{-3}{1} = -3

Final Answer:

The y-intercept is (0,3)(0, -3).

Would you like a more detailed explanation or another example?

Related Questions:

  1. How do you find the x-intercept of this function?
  2. What is the domain of this function?
  3. How do you determine vertical and horizontal asymptotes?
  4. What happens to yy as xx \to \infty?
  5. Can this function have any removable discontinuities?

Tip:

To find the x-intercept, set y=0y = 0 and solve for xx.

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Math Problem Analysis

Mathematical Concepts

Algebra
Rational Functions
Intercepts

Formulas

y-intercept: Set x = 0 and solve for y

Theorems

Concept of Intercepts in Functions

Suitable Grade Level

Grades 9-12