Image 2 shows the graph of two equations. The solution is a single line, which means the system has infinitely many solutions. Name one possible
solution that these two equations share in common.

there are infinitely many solutions.

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.