Does solving a system of linear equations by graphing give the same solution as solving by substitution?Explain your reasoning.

  yes

Step-by-step explanation:

Graphing, substitution, matrix methods, Cramer's rule, guess and check are all methods that can give a solution to a system of linear equations. That solution will be the same regardless of the method used.

Any solution method that solves the system will arrive at the same solution.

69

step-by-step explanation:

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.