#include <iostream>
#include <cstdio>

using namespace std;

int main(){
    
  int n;
  cin >> n;
  while(n--){

    double x1,x2,x3,x4;
    double y1,y2,y3,y4;

    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");
  }
}