(-5, -49), (2, -22), and (3, 23) are the solution to the equation y = 9x - 4 because when x = -5, y is equal to -49, when x = 2, y is equal to -22, and when x = 3, y is equal to 23. This means that each of these points satisfies the equation y = 9x - 4. Therefore, they are the solution to the equation.
