Question

Determine a equacao da reta que passa pelos pontos A (-1 2) e B (5, 2)

Answer 1

$\left[\begin{array}{ccc}-1&2&1\\5&2&1\\x&y&1\end{array}\right]$



 $\left[\begin{array}{ccc}-1&2&\\5&2&\\x&y&\end{array}\right]$





-2+2x+5y-2x+y-10=0 ~~~~~> equaçao 
2x-2x+5y+y-2-10=0
6y=12
y=2