Solve the system of equations.y = -5x + 24y = 4x - 21

At the intersection, both expressions for y are equal, so set -5x + 24 = 4x - 21. Solving gives 45 = 9x, so x = 5; substituting gives y = 4(5) - 21 = -1. The solution is (5, -1), choice B.

AI-written and checked against the verified answer.