#include<stdio.h>
#include<math.h>
 
int main(void)
{
    double x1, x2, x3, x4, y1, y2, y3, y4;
    int i = 0;
    int n;
    double s;
    double eps = 0.0000000001;
     
    scanf("%d", &n);
     
    for(i = 0; i < n; i++) {
        scanf("%lf %lf %lf %lf %lf %lf %lf %lf", &x1, &x2, &x3, &x4, &y1, &y2, &y3, &y4);
         
        x2 -= x1;
        y2 -= y1;
        x4 -= x3;
        y4 -= y3;
         
        s = (x2 * y4) - (y2 * x4);
         
        s = abs(s);
         
        if (s < eps) {
            s = 0;
        }
         
        if (s == 0) {
            printf("YES\n");
        }
         
        else {
            printf("NO\n");
        }
    }
     
    return 0;
}