Question

Qual a equação geral da reta que passa pelos pontos A(8, 3) e B(0, 4):

Answer 1

$\mathsf{\begin{vmatrix}8&3&1\\0&4&1\\x&y&1\end{vmatrix}=0}$

$\mathsf{8(4-y)-3(-x)+1(-4x)=0}\\\mathsf{32-8y+3x-4x=0}\\\mathsf{-x-8y+32=0\times(-1)}\\\mathsf{x+8y-32=0}$