Question

no plano cartesiano, os pontos a=(-1;-3) e b=(0;-6). o coeficiente angular da reta (r) que passa por AB vale??

Answer 1

$Coef.\;Angular=\frac{a_y-b_y}{a_x-b_x}\\\\Coef.\;Angular=\frac{-3-(-6)}{-1-0}\\\\Coef.\;Angular=\frac{-3+6}{-1}\\\\Coef.\;Angular=\frac{3}{-1}\\\\Coef.\;Angular=-3$