1. What is a system of linear equations? a) A set of equations with only one variable b) A set of equations with two variables c) A set of equations with three variables d) A set of equations with four variables

2. How many solutions can a system of linear equations have? a) Only one solution b) Two solutions c) Infinite solutions d) No solution

3. What is the most common method for solving a system of linear equations? a) Substitution method b) Addition method c) Graphing method d) Matrix method

4. Which of the following is an example of a system of linear equations? a) 2x + 3y = 5 and 3x - 4y = 2 b) x^2 + y^2 = 25 and 2x + 3y = 7 c) 3x + 2y = 6 and 4x + 2y = 8 d) 2x + 3y = 5 and 2x + 3y = 7

5. How many equations are needed to solve a system of linear equations with two variables? a) One equation b) Two equations c) Three equations d) Four equations

Answers: 1. b) A set of equations with two variables 2. a) Only one solution 3. b) Addition method 4. a) 2x + 3y = 5 and 3x - 4y = 2 5. b) Two equations