We have the next formula to calculate the slope between 2 points
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
where (x1,y1) is one point and the other is (x2,y2)
in this case, we have
(-2,10)=(x1,y1)
(1,5)=(x2,y2)
then we substitute the values
[tex]m=\frac{5-10}{1+2}=\frac{-5}{3}=-\frac{5}{3}[/tex]
the slope is -5/3
