Question

Which of the following is linear equation in two variables?

Options

• `x/3 + 5/y = 6`

• 2x² – 3y = 8 – 3y

• x + 2y = 5 – 3y

• 3x² + y = 0

Answer 1

x + 2y = 5 – 3y

Explanation:

x + 2y = 5 – 3y → x + 5y = 5, which is of the form ax + by + c = 0 with both x and y to the first power, so it is linear in two variables. A linear equation in two variables must have degree 1.