When solving a system of two linear equations using the substitution method, what are you looking to do exactly? Check to see if a given point is a solution to each equation in the system. O Graph each line on the same graph, then find their point of intersection (if one exists). O Solve one of the equations for one of the variables, then use this to simplify the other equation down to a single variable. O Add a multiple of one line to the other line, in the hopes of reducing down to a single variable