#include <iostream>

int main(int argc, const char * argv[]) {
    int num;
    std::cin >> num;
    double x1,y1,x2,y2,x3,y3,x4,y4;
    
    for(int i = 0;i < num;i++){
        std::cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
        double a = (y1-y2)/(x1-x2);
        double b = (y3-y4)/(x3-x4);
         std::cout <<  (a==b ? "YES":"NO") << '\n';
    }
}