please help i need this for tomorrow. thanks

Answer:
y=1/3x
Step-by-step explanation:
To write an equation we need to find the slope. to do that we use y-y1 over x-x1. In this case, I used the points (3,1) and (0,0). 1-0 over 3-0 comes out to 1/3. Replace m with that and you have your equation.