若A(3.-2),b(-9.4),c(x.0)三点共线则...X为____
问题描述:
若A(3.-2),b(-9.4),c(x.0)三点共线则...X为____
答
(3-(-9))/((-2)-4)=(3-x)/(-2) x=-1
若A(3.-2),b(-9.4),c(x.0)三点共线则...X为____
(3-(-9))/((-2)-4)=(3-x)/(-2) x=-1