#include <stdio.h>
#include<cmath>
using namespace std;
 
int main(){
    double x1,x2,x3,x4,y1,y2,y3,y4;
    int n;
    scanf("%d",&n);
    for(int i=0; i<n; i++){
        scanf("%lf %lf %lf %lf %lf %lf %lf %lf",&x1,&y1,&x2,&y2,&x3,&y3,&x4,&y4);
 
        if(abs((y2 - y1)*(x4 - x3) - (y4 - y3)*(x2 - x1) ) < 0.0000000001){ //I copied yutaka watabe's code here
            printf("YES\n");
        }else{
            printf("NO\n");
        }
 
    }
    return 0;
}


