Question

Determine o coeficiente angular da reta que passa pelos seguintes pontos:
OBS: lembre-se m=y-y0/x-x0;
a) (5,3) e (10,7)
b) (-5,2) e (0,5)
c) (1,6) e (4,1)
d) (-3,-1) e (-2,-4)

Answer 1

$\boxed{\begin{array}{l}\rm a) ~\sf m=\dfrac{7-3}{10-5}=\dfrac{4}{5}\\\rm b)~\sf m=\dfrac{5-2}{0-(-5)}\\\sf m=\dfrac{3}{5}\\\rm c)~\sf m=\dfrac{1-6}{4-1}=-\dfrac{5}{3}\\\rm d)~\sf m=\dfrac{-4-(-1)}{-2-(-3)}\\\sf m=\dfrac{-4+1}{-2+3}\\\sf m=\dfrac{-3}{1}=-3\end{array}}$