Answer:
(B) y=-3x+1
Explanation:
If the coefficient is positive than as you move to the right it will increase, but you can see the line decreases as you move to the right, so you know it must be negative. the smaller the coefficient of x the closer to 0 so the closer to horizontal it is. the larger the coefficient of x the closer to vertical it will be. -3 is farther away from 0 than -1/3 is so y=-3x+1is the answer. you can also figure out the coefficient by taking two points and calculating the slope with the slope formula.