Question

Determine a equação da reta que passa pelos pontos R (-2,6) e S(8,4)

Answer 1

$\left[\begin{array}{ccc}x&y&1\\-2&6&1\\8&4&1\end{array}\rig \left\begin{array}{ccc}x&y&\\-2&6&\\8&4&\end{ar}\right]$  
  6x+4y+2y-4x-48

R=2x+6y-48=0