#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]);

    if(x[0] == x[1] || x[2] == x[3])
      if(y[0] == y[1] && y[2] == y[3]) puts("YES");
      else puts( (x[0] == x[1] && x[2] == x[3])?"YES":"NO");
    else if(y[0] == y[1] || y[2] == y[3])
      puts( (y[0] == y[1] && y[2] == y[3])?"YES":"NO");
    else
      puts((y[0]-y[1])/(x[0]-x[1]) == (y[2]-y[3])/(x[2]-x[3])?"YES":"NO");
    
  }
  return (0);
}