
Noob graph problem
Hi,
I need help with the graph. I need to determine where the angle of the 2 points intersect with the max eg;(10,10) (10, 10) outer box. I'm sure this is a simple formula but its been awhile :P Thanks in advance.
Attached Thumbnailshttp://www.mathhelpforum.com/mathhe...blemgraph.bmp

calculate the slope
Two points determine a straight line. From the graph, two points are (0,0) and (4, 2.5). The line is 5x/8. When x=10, the point of interception is 6.25 when x=10 the point of intersection is 6.25