What is the closest approximate solution to the system of equations?(–5, –7.2)(–5, –6.8)(–5, –6.2)(–5, –5.9)

For this case what you should do is verify the point where both functions are cut.
 At that point, you will find the solution to the linear system of equations.
 For this case, the solution is the ordered pair
 (x, y) = (–5, –6.8)
 answer
 (x, y) = (–5, –6.8)