Question

Find the slope of the line containing the points (-1,6) and (2,1).

Answer 1

$(x_1;\ y_1);\ (x_2;\ y_2)\\\\m=\frac{y_2-y_1}{x_2-x_2}\\==========================\\\\(-1;\ 6);\ (2;\ 1)\\\\m=\frac{1-6}{2-(-1)}=\frac{-5}{2+1}=\frac{-5}{3}=-1\frac{2}{3}$