If the point (a,7) lies on the graph of the equation 5x-y=8, then a= a) -3 b) 3 c) 1/5

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno nina made two errors in the proof. identify and correct the errors.