(2,y), (3,3), m=2
Now suppose we have a line through these two points
slope of the line would be:
M=difference in y-coordinates/difference in x-coordinates
M=(y-3)/(2-3)
M=(y-3)/-1
M=-(y-3)
M=-y+3
M=3-y
But we have been told that the slope is 2
so we put this value in place of M
2=3-y
2-3=-y
-1=-y
1=y
y=1
Hope this helps,
-xC