#include <iostream>
#include <vector>

int main(int argc, const char * argv[]) {
    std::vector<int> r;
    int num;
    std::cin >> num;
    double xa,ya,xb,yb,xc,yc,dx,dy;
    double a,b;
    for(int i = 0;i < num;i++){
        std::cin >> xa >> ya>> xb >> yb >> xc >> yc >> dx >> dy;
        a = (yb - ya) / (xb - xa);
        b = (dy - yc) / (dx - xc);
        if(a == b){
            printf("YES\n");
        }else{
            printf("NO\n");
        }
    }
}