One equation in a system of equations is y = 4x + 5. Which equation below would have to be the second equation so that the system has (1, 9) as its only solution?

Question

One equation in a system of equations is y = 4x + 5. Which equation below would have to be the second equation so that the system has (1, 9) as its only solution?

Answer 1

y = -4x + 13 is one solution

y= 3x + 6 is another

y = x +8 another

among an infinite number of line equations that would all intersect with the given 1st equation at (1,9)