Writing the Equation of a Line

When given the graph of a line, the slope and a point on a line, or two points on a line, it is possible to write an equation of the line in multiple forms. In this topic, you learned how to write the equation of a line in three forms: slope-intercept form, point-slope form, and standard form. You also learned how writing the equations of horizontal and vertical lines differs from writing the equation of a line with a positive or negative slope.