Question 707904
The y intercept is 3, so b = 3


We don't know the slope because it's not given and we have no way to find it since we don't have any other point. So leave the slope as m.


So y = mx+b turns into y = mx+3


So any equation that goes through (0,3) looks like y = mx+3


Once you figure out the slope, you can replace m with that slope.