Question

calcule o coeficiente angular da reta AB, sendo A(-1;4) e B(5;-8). Alguém me ajuda pfvr

Answer 1

$m=\frac{yb-ya}{xb-xa}$
$m=\frac{-8-4}{5-(-1)}$
$m=\frac{-12}{5+1}$
$m=\frac{-12}{6}$
$m=-2$