Question

Os pontos A( x, 3), B(-2,-5)e C(-1, -3) são colineares.Qual o valor de X?



















 são colineares. Qual é o valor de x?

Answer 1

AB//BC
B-A//C-B
(-2,-5)-(x,-3)//(-1,-3)-(-2,-5)
(-2-x,-8)//(1,2)

-2-x = -4                                       -8 = -4
  1                                                  2
-2-x=-4.(1)
-2-x=-4
-x=-4.(-2)
-x=-6   .(-1)
x=6