Question 1727
hi

by slope, i take it you mean a straight line?

Gradient, m of a straight line is given by:

{{{m = (change_in_y)/(change_in_x) = (y2-y1)/(x2-x1)}}}

So, decide which of your coordinates are (x1,y1) and (x2,y2) and stick with it in your calculation. However, the choice DOES NOT MATTER, as i will illustrate:

let (x1,y1) be (5,3), so:

{{{m=(1-3)/(4-5)}}}
hence {{{m = (-2)/(-1)}}}. Therefore m, the gradient is +2.

Alternatively, let (x1,y1) be (4,1), so:

{{{m=(3-1)/(5-4)}}}
hence {{{m = 2/1}}}. Therefore m, the gradient is +2.

Hope this helps.

cheers
Jon.