Question 733998
(1)
Formula for slope to find slope for the two points.


(2)
Pick either of the given points, and use the slope just found and determine the point-slope form for an equation of a line.  Simplify, and put into slope-intercept form.


(3) 
Read the y-intercept directly from the equation.  y=mx+b.  The y-intercept is b.


That is the best process to follow.  If done correctly, {{{y=-(1/4)x+4}}}, and y intercept is +4.