Isidro L. answered 06/26/19
AP Calculus AB /Algebra Teacher 20 years Experience.
For this problem, we are going to use the slope of the line formula given two points (x1,y1), (x2,y2).
m =. y2 -y1/x2-x1 =. (-4 -(-1)) / (-2 -7). = (-4+1) / (-9) = -3/-9 simplify to. 1/3 therefore the sope of this line is m = 1/3. rise/run or the difference in y over the difference in x.