I'm having trouble with slope like y = mx + b
And I am trying to find the slope between two points on a line of best fit (1, 3) (2,3)
If the two ponts are (1, 3) and (2, 3) then the line between them is horizontal (the two y-values are the same), so it has zero slope.
In general with points (x1, y1) and (x2, y2) the slope is given by (y2 - y1)/(x2 - x1)
The Slope is 1.
+32 
