Aline with a slope of 1/3 passes through (3,-4). which equation represents the line?

I can't see the choices you've been given, but to answer this question you'd have to find the y-intercept by substituting the coordinates into y = mx + c (with c being the intercept), so:
-4 = (1/3 × 3) + c
-4 = 1 + c
- 1
-5 = c
Now you know the intercept is -5, so your equation is y = 1/3x - 5. I hope this helps!

No i refuse to tell you the answer but the estimate is 10