#include <cstdio>

int main(){
    
  int n;
  scanf("%d",&n);
  for( int i = 0 ; i < n ; i++ ){
    double x1,x2,x3,x4;
    double y1,y2,y3,y4;
    scanf("%lf%lf%lf%lf%lf%lf%lf%lf",&x1,&y1,&x2,&y2,&x3,&y3,&x4,&y4);
    if( (y2-y1)/(x2-x1) == (y4-y3)/(x4-x3) ){
      printf("YES\n");
    }
    else printf("NO\n");
  }
}