Math Problem Statement

x intercepts of f(x)= 2x-4/3x^2-7x+2 ​

Solution

To find the xx-intercepts of a function, we set f(x)=0f(x) = 0 and solve for xx.

Given the function: f(x)=2x43x27x+2f(x) = \frac{2x - 4}{3x^2 - 7x + 2}

We set the numerator equal to zero, as this will give the xx-intercepts (because a fraction is equal to zero when the numerator is zero, provided the denominator is not zero):

2x4=02x - 4 = 0

Solving for xx: 2x=42x = 4 x=2x = 2

Thus, the xx-intercept is at x=2x = 2, but we need to check that the denominator is not zero at this point. Let's substitute x=2x = 2 into the denominator:

3(2)27(2)+2=3(4)14+2=1214+2=03(2)^2 - 7(2) + 2 = 3(4) - 14 + 2 = 12 - 14 + 2 = 0

Since the denominator is zero at x=2x = 2, this means the function is undefined at this point, so there is no xx-intercept.

Conclusion:

There are no xx-intercepts because x=2x = 2 causes the denominator to be zero, resulting in an undefined value at that point.

Would you like further details or have any other questions?

Here are some related questions you may find interesting:

  1. How do we find vertical asymptotes for rational functions?
  2. What is the significance of a function being undefined at a particular point?
  3. How can we find the domain of a rational function?
  4. What happens at points where both the numerator and denominator are zero?
  5. How do we check for horizontal asymptotes in a rational function?

Tip: Always check if the denominator is zero when finding xx-intercepts for rational functions.

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Math Problem Analysis

Mathematical Concepts

Algebra
Rational Functions
X-intercepts
Undefined Points

Formulas

f(x) = (2x - 4) / (3x^2 - 7x + 2)
Set f(x) = 0 for x-intercepts
Denominator ≠ 0 for valid intercepts

Theorems

A fraction is zero when the numerator is zero (denominator ≠ 0)
Undefined points occur when the denominator is zero

Suitable Grade Level

Grades 9-12