Question

verifique os pontos que pertencem a reta R de equação x+3y-4=0 .
a)A= (3,-4) b) B =(-2, 0) c) (1,1) d) D=(-2,2)​

Answer 1

Resposta :

alternativa c) (1,1)

alternativa d) (-2,2)

(1,1)

x = 1

y = 1

x + 3y - 4 = 0

1 + 3.1 - 4 = 0

1 + 3 - 4

4 - 4 = 0  ✓

(-2,2)

x = -2

y = 2

x + 3y - 4 = 0

-2 + 3.2 - 4 = 0

-2 + 6 - 4

-2 + 2 = 0 ✓