Question

Which of the following is/are linear equations?

• A. +
• B. x + y + z
• C. 2xy + xyz
• D. All of the above

Answer 1

The correct option is C

2xy + xyz

An equation in which the highest power of the variable is '1' is called a linear equation. $2y+3$ is not an equation as it does not have an equality sign in it. The highest power of y in $2y^2+3$ is '2', so it is not a linear equation. The highest power of $y$ in $2y+3=0$ is '1', hence it is a linear equation.