#include <stdio.h>
 
int main() {
    double x1, x2, x3, x4, y1, y2, y3, y4;
    int n;
 
    int i;
 
 
    scanf("%d", &n);
 
    for(i = 0; i < n; i++) {
        scanf("%lf %lf %lf %lf %lf %lf %lf %lf", &x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4);
 
        if((x2 - x1) * (y4 - y3) - (y2 - y1) * (x4 - x3))
            printf("NO\n");
        else
            printf("YES\n");
    }
 
    return 0;
}