
#include <iostream>
#include <cstdio>

bool hantei(double x[], double y[]);

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(hantei(x, y))
      printf("YES\n");
    else printf("NO\n");
  }
}

bool hantei(double x[], double y[]) {
  if(x[1]-x[0]/y[1]-y[0] == x[3]-x[2]/y[3]-y[2]) return true;
  //if(x[0]-x[3] == x[1]-x[2] && y[0]-y[3] == y[1]-y[2]) return true;
  return false;
}