#include <stdio.h>

int main(){
    int n,i,j;
    double X[5],Y[5];
    long x[5],y[5];
    scanf("%d",&n);
    for(i=0;i<n;i++){
        for(j=1;j<=4;j++){
            scanf("%lf %lf",&X[j],&Y[j]);
            x[j] = (long)(X[j]*100000);
            y[j] = (long)(Y[j]*100000);
        }
        if((x[2]-x[1])*(y[4]-y[3])==(x[4]-x[3])*(y[2]-y[1])){
            if((y[2]-y[1])*(x[3]-x[1])==(x[2]-x[1])*(y[3]-y[1])){
                printf("NO\n");
            }else{
                printf("YES\n");
            }
        }else{
            printf("NO\n");
        }
    }
}