line, assuming ou want slope and stuff
y=mx+b
m=slope
b=y intercept
slope=(y2-y1)/(x2-x1) when you have the points (x1,y1) and (x2,y2)
poick any 2
(1,1) and (2,3)
slope=(3-1)/(2-1)=2/1=2
sloppe=m=2
y=2x+b
sub 1 point
(1,1)
1=2(1)+b
1=2+b
mnus 2
-1=b
y=2x-1 is equation
