Question

determine a equação da reta que passa pelos pontos a (1,5) e B (0,3).​

Answer 1

$\boxed{\begin{array}{l}\begin{bmatrix}\sf1&\sf5&\sf1\\\sf0&\sf3&\sf1\\\sf x&\sf y&\sf1\end{bmatrix}=0\\\sf1\cdot(3-y)-5\cdot(0-x) +1\cdot(0-3x)=0\\\sf3-y+5x-3x=0\\\sf y=2x+3\end{array}}$