#include<stdio.h>
#include<math.h>
int main(){
    int n;
    int i;
    double x1,y1,x2,y2,x3,y3,x4,y4;
    scanf("%d",&n);
    //printf("%llf",1e-10);
    for(i=0;i<n;i++){
        scanf("%lf %lf %lf %lf %lf %lf %lf %lf",&x1,&y1,&x2,&y2,&x3,&y3,&x4,&y4);
        if((y2-y1)/(x2-x1)==(y4-y3)/(x4-x3)){
            puts("YES");
        }
        else puts("NO");
    }
    return 0;
}