Hello, Jssoyg! I've solved the problem for you below. I hope it helps.
Slope equation is
. The two points are (0,1) and (4,2), so the equation becomes
. We now know that the slope is 1/4, so now let's write it in the
format. Plug in the m, x, and y values:
.
This becomes
which means b = 1.
Your answer is y = 1/4x + 1. Hope this was helpful. :D