Question

urgente!!

Usando o determinante de matrizes, a equação da reta que passa pelos pontos A (2,3) e B (3,5) é

a) -2x + y + 1 = 0

b) 2x -y + 1 = 0

c) 8x - y - 1 = 0

d) 8x + y + 1 = 0

Answer 1

$\small\boxed{\begin{array}{l}\begin{vmatrix} \sf2&\sf3&\sf1\\\sf3&\sf5&\sf1\\\sf x&\sf y&\sf1\end{vmatrix}=0\\\sf 2(5-y)-3(3-x)+1(3y-5x)=0\\\sf 10-2y-9+3x+3y-5x=0\\\sf -2x+y+1=0\end{array}}$