How Do You Graph Linear Equations With Two Variables?
A linear equation can be written in the form ax + by = c, where x and y are variables and a, b, and c are real numbers. Although many modern graphing calculators can graph linear equations (in any form) with minimal work on your part, graphing linear equations is a basic math skill that you should learn. Substitute x=0 in the equation and find a value for y that makes the resulting equation true. For example, in the equation x-2y=2, when x=0, the equation becomes -2y=2. Since y=-1 makes this equation true, one point on the line is (0,-1). The x-value is the first coordinate. The y-value is the second coordinate. Substitute y=0 in the equation and find a value for x that makes the resulting equation true. Following the example in Step 1, when y=0, the equation x-2y=2 becomes x=2. Thus, another point on the line is (2,0). Find a third point on the line. Substitute any value for x or y that is not already listed and solve for the other variable. For instance, when y=1, the equation x-2y=2
