Y = -x/3 + b1 = -3/3 + b
substitute values of point1 = -1 + b
then reduce2 = b
add one to both sides y = -x/3 + 2
Yintercept is the point where the line crosses the y axis and where x=0
(x,y)
yintercept at y=b is
(0,b)
If you do 27-12 (which is 15) you add 15 to 13 and 20
= 7 2/5 - 1 4/5
= 37/5 - 9/5
= 28/5
In short, Your Answer would be: 28/5 or 5 3/5
Hope this helps!
