Practice Summary (9) - Rational Functions - IB 10 Mathematics – Group 5, Algebra
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Practice Questions

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Question 1 Easy

Find the domain of \( f(x) = \frac{2x}{x + 5} \).

💡 Hint: What value makes the denominator zero?

Question 2 Easy

What is the x-intercept of \( f(x) = \frac{x + 1}{x - 3} \)?

💡 Hint: Set the numerator equal to zero.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the form of a rational function?

A single polynomial
A ratio of two polynomials
An exponential function

💡 Hint: Remember the general form of rational functions.

Question 2

True or False? The domain of a rational function can include values that make the denominator zero.

True
False

💡 Hint: Think about what happens during division.

2 more questions available

Challenge Problems

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Challenge 1 Hard

Consider the function \( f(x) = \frac{x^2 - 1}{x^2 - 2x + 1} \). Find the domain, vertical asymptotes, horizontal asymptotes, and sketch the graph.

💡 Hint: Factor both the numerator and denominator before identifying the features.

Challenge 2 Hard

Solve the rational equation \( \frac{2x + 1}{x + 1} = \frac{3}{x - 1} \).

💡 Hint: Set up the equation correctly before isolating x.

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