Linear Function

A linear function is literally a formula for a straight line when solved and all the variables are replaced with constants. The base equation of a linear function is y = mx + b where:

• "y" is the dependent variable; usually the one we are solving for so it is located to the left of the equal sign
• "x" is the independent which we manipulate to get different result of y
• "m" is the coefficient of the independent variable which determines the rate of change of "y"·
• "b" is the constant term or the y intercept

In a linear equation, if you increment the independent variable and plot the points on a graph, you get a straight line.