Question

Obter a equação d reta que passa pelos pontos P(-1,-3) e Q(1,1)

Answer 1

M = yb - ya / xb - xa = 1 + 3 / 1 + 1 = 4/2 = 2

y - ya = m ( x - xa )

y + 3 = 2 ( x + 1 )

y + 3 = 2x + 2

y = 2x - 1

2x - y - 1 = 0