​a) Find the slope of the line passing through left parenthesis 2.5 comma 1.6 right parenthesis and left parenthesis 1.5 comma 2.6 right parenthesis pair of​ points, if possible. ​b) Based on the​ slope, indicate whether the line rises from left to​ right, falls from left to​ right, is​ horizontal, or is vertical.​a) Find the slope of the line passing through left parenthesis 2.5 comma 1.6 right parenthesis and left parenthesis 1.5 comma 2.6 right parenthesis pair of​ points, if possible. ​b) Based on the​ slope, indicate whether the line rises from left to​ right, falls from left to​ right, is​ horizontal, or is vertical.