Linear functions are straight lines. They are usually in the form of y = mx + c. This is called slope intercept form because m represents the slope and c represents the y intercept.
There is another form Ax + By = C. This form is called general form. From this form we can determine the y - intercept by setting X = 0 and the X intercept by setting y = 0.
If you need any other descriptions please ask me.
