Question 20: Can a linear equation have two variables? Found 4 solutions by ichudov, want2learn29330, andkon, kekestarme:Answer by ichudov(507) (Show Source):
You can put this solution on YOUR website! Sure it can. If a single linear equation has two variables, then it defines not one solution, but many solutions. If you plot the solutions on a graph, where one axis is one variable and another axis is another variable, you get a straight LINE. That's why the equation is called LINEar.
Example of a linear equation with two variables: y-x=3. Its graph: