The slope of the line that passes through the points (14/5) and (20, -4), so you take y-y/x-x so you substitute the y's in for 5 and -4 and x in for 14 and 20.
5--4/ 14-20 9/-6 Then you make the fraction smaller! -3/2 = Answer <span />
One way is to type it into your trusty TI and use the table from presing stat and then stat againg then calc then 4 so the equation that I got from your set of points is y=1.983333333333333x+0.80555555555