Posted by Mel on .
Thanks for the help DRWLS. I tried to work is out and came up with this working out:
A(4,2) is parallel to 2x3y=7
y = mx + c
3y = 2x + 7
y = 2/3x  2 1/3
(yy*) / (xx*) = m
(y+2) / (x4) = 2/3
y+2 = 2/3(x4)
y+2 = 2/3x  2 2/3
y = 2/3x2 2/3  2
y = 2/3x4 2/3

Maths 
drwls,
You've got it!