Question

qual e a equação da reta que passa pelos pontos 1,2 e 3 e -2

Answer 1

A(1,2) e B(3,-2)

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

y - ya = m ( x - xa )

y - 2 = -2 ( x - 1 )

y - 2 = -2x + 2

y = -2x + 2 + 2

2x + y - 4 = 0