#include<stdio.h>
int main(void)
{
    int n,i;
    double x1,x2,x3,x4,y1,y2,y3,y4,a,b;
    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);
        a=(y1-y2)/(x1-x2);
        b=(y3-y4)/(x3-x4);
        if(a==b)printf("YES\n");
        else if(a!=b)printf("NO\n");
    }
    return 0;
}