How do you find slope? (I don't really understand it)

The slope can be found if you have 2 points on the line.

Like (4,5) and (7, 10) in the form (x.y)

slope = m = (y2 -y1) divided by (x2-x1)

m = (10-5) /(7 -4) = 5/ 3

as you move your eye from left to right
if the curve moves up
the slope is positive.
slope = rise/run
on a road or on your graph paper.
However on your graph paper, slope is only positive if the rise up happens as you move to the right (East or +x direection)
For any two points on the line.
slope = (Y2-Y1) / (X2 - X1)

Thank you

Yes, like John said :)

I think this helped-

Good :)