#include<stdio.h>
int main(){
  int n;
  double x[4],y[4];
  scanf("%d",&n);
  for(int i=0;i<n;i++){
    
    for(int j=0;j<4;j++)
      scanf("%lf %lf",&x[j],&y[j]);
    
    puts( (y[0]-y[1])*(x[2]-x[3])==(y[2]-y[3])*(x[0]-x[1])?"YES":"NO");
    
  }
  return (0);
}