Answer:
C. y = x - 4
Step-by-step explanation:
A.
y = x + 4
-1 = 3 + 4
-1 = 7
B.
y = -3x
-1 = -3(3)
-1 = -9
C.
y = x - 4
-1 = 3 - 4
-1 = -1
D.
y = 3x
-1 = 3(3)
-1 = 9
