How do I find a point on a line given slope and distance

[cfrench]

How do I find a point on a line given x1,y1 Distance, and slope

 

[stapel]

How do I find a point on a line given x1,y1 Distance, and slope

How do x1, y1, the distance (of what, from what?), and the slope (of which line?) related to "a point"?

Please be specific. Thank you!

Eliz.

 

[cfrench]

Sorry,
I have a line with points x1,y1 and x2,y2. I need to find a point on the line given a percent of line.

So if I want a point on the line 18% between x1,y1 x2,y2 starting from x1,y1 how do I do that. The mid point formula only works if I am looking for the midpoint. I need to calculate various points along the line given a percentage

 

[Denis]

Sorry,
I have a line with points x1,y1 and x2,y2. I need to find a point on the line given a percent of line.
So if I want a point on the line 18% between x1,y1 x2,y2 starting from x1,y1 how do I do that. The mid point formula only works if I am looking for the midpoint. I need to calculate various points along the line given a percentage

Form a right triangle, (x1,y1) and (x2,y2) being the ends of the hypotenuse.
Calculate hypotenuse's length; then 18% of that: let that = k.
Now form right triangle with hypotenuse = k.
The 2 triangles will be similar, and sharing point(x1,y1).

OK :?: