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