Question

Determine o valor de m pra que os pontos A (m,11),B (2,5)eC (0,1)sejam colineares

Answer 1

k é o coeficiente angular

k=(y2-y1)/(x2-x1)

(5-11)/(2-m) = (1-11)/(0-m)

-6/(2-m) =-10/(-m)

6m= 10*(m-2)

6m=10m-20

20=4m

m=4