What is the slope of -2,-9 1,-3

If you mean the gradient of linear graph, it's easy peasy.

Gradient is always change in y value / change in x value

It forms right angled triangle.

gradient = $$\frac{y_0-y_1}{x_0-x_1}$$

-3-(-9)/1-(-2)

=-3+9/1+2

=6/3

=2

Gradient of your slope is 2.

Nice illustration, flflvm97   !!!

Thanks, Phill.

I'm just doing what I should do.

I want to participate to this forum as much as I can.

(My english is not good though :()

TY

Don't worry......I'm still working on that myself......

You are very welcome here flflvm97.    

You have made a fantastic impression already.  We a very pleased that you have joined us.

Thanks.