How do you determine if you have a linear equation

The video tutorial explains linear equations, focusing on slope-intercept and standard forms. It details the role of slope (M) and intercept (B) in forming a line. The tutorial outlines conditions for linear equations, emphasizing that variables must have an exponent of 1 and cannot be multiplied or in the denominator. Examples of non-linear equations are provided to illustrate these points.

Describe the role of the slope (M) and intercept (B) in a linear equation.

Why is the equation y^2 - y = 9y not a linear equation?