Question

Determine o coeficiente angular da reta que passa pelo ponto A(3, 1) e B(-1, 5).0

Answer 1

Resposta:

m=tg α ou m= Δy/Δx

Δy: 5-1=4

Δx: -1 -3= -4

m=4/-4

m= -1

Answer 2

$\Large\displaystyle\text{ \begin{gathered} \sf{ m=\frac{(y_2-y_1)}{(x_2-x_1)}} \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \sf{m=\dfrac{(5-1)}{(-1-3)} } \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \sf{m=-\dfrac{4}{4} } \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered}\boxed{ \sf{m=-1 } }\end{gathered} }$