3.
You could probably look up a fancy explanation of why this is, by I just went the easy route.
1 is definitely possible.
2 is too!
(Sorry if the images are hard to see)
So the answer has got to be 3!
Hope this helps!
Answer:
y = -5x + 3
Step-by-step explanation:
y = Ax + B
A = slope
B = y intercept
y = -5x + 3