#include <stdio.h>

int main(void)
{
  int n,i;
  double x1,y1,x2,y2,x3,y3,x4,y4;

  scanf("%d", &n);

  for(i = 0;i < n;i++){
    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");
    }
  }
  return 0;
  
}