A line passes through the points A, B, and C. Find y.
A = (0,0), B = (2,3), C = (4,y)
The slope of the line from A to B is [ 3 0 ] / [ 2 - 0] = 3/2
So....from B to C
[ y - 3 ]/ [ 4 - 2 ] = 3 / 2
[y - 3 ] / 2 = 3 / 2
y - 3 = 3
y = 6