Brandon graphed one line in a system of equations. The system has only one solution, (0, 3). Which equations could also be part of the system? Check all that apply.

Brandon’s Graph
On a coordinate plane, a line goes through (0, 3) and (3, 0).
y = one-half x + 3
y = negative one-half x + 1
x + y = 3
2 x minus 3 y = negative 9
y = 3