#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);
  
    x2 -= x1;
    y2 -= y1;
    x4 -= x3;
    y4 -= y3;

    if(x2 == 0 || x4 == 0){
      if(x2 == 0 && x4 == 0){
	printf("YES\n");
      }else{
	printf("NO\n");
      }
    }else{
      if(y2/x2 == y4/x4){
	printf("YES\n");
      }else{
	printf("NO\n");
      }
    }
  }
    
  return 0;
}