#include<cstdio>
#include<cmath>
 
int main(){
    int n;
    double x[4], y[4];
    int xi[4], yi[4];
    scanf("%d", &n);
    for(int i = 0; i < n; i++){
        scanf("%lf %lf %lf %lf %lf %lf %lf %lf", &x[0],&y[0],&x[1],&y[1],&x[2],&y[2],&x[3],&y[3]);
 
        for(int i = 0; i < 4; i++){
            xi[i] = (int)(x[i] * 1000000);
            yi[i] = (int)(y[i] * 1000000);
        }
         
        if((yi[0] - yi[1])*(xi[2] - xi[3]) == (xi[0] - xi[1])*(yi[2] - yi[3])){
            printf("YES\n");
        }else{
            printf("NO\n");
        }
    }
    return 0;
}