if you have got a agra[h with a sytraight line on it, how do you work out teh gradient, i think know the formula m=(y1-y2) / (x1- x2) but am struggling to use it, can someone give me an example please!?
(Original post by 786_786)
i know im bugging now but is there anyyyy chance you can give me an example and see if i can work it out please!
thank you soo much!
Example: Work out the gradient of line A and line B where A(10,9) and B(6,-7). Make an equation in the form of y=mx+c Working: Okay, so we have coordinates of A and B, so we use the formula: m=(y2-y1)/(x2-x2). So substitute the coordinates of both A and B into the formula: m=(-7-9)/(6-10), which then equals: m=-16/-4 which simplifies to +4.
We then substitute into the formula, and can use any of the points above for either A and B. So we substitute our gradient (m) into the (m) of the formula and any point, we will pick point A (easier as no negative or positive signs-less likely to have a mistake).