Question

Solve the system of equations by graphing?
-1/3x + y = -1
y = 4 + 1/3x

a) infinitely many solutions
b) no solution
c) (-4, 1)
d) (0, 0)

idk if this is right but i tried to solve it like this:

1/2x - -2x- 7 = 1/2x +3
1/2x - -2x = 3 + 7
(1/2x and -2x cancel each other out)
x = 3 + 7
x = 10
-2x - 7 = 1/2(10) + 3

where do I go from there if I'm even on the right track...?