#include<iostream>
 
int main()
{
    int n;
 
    std::cin >> n;
 
    double x1,y1,x2,y2,x3,y3,x4,y4;
 
    for(int i=0;i<n;++i)
    {
        std::cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
 
        double m1 = (y1-y2)/(x1-x2);
 
        double m2 = (y3-y4)/(x3-x4);
 
        std::cout <<  (m1==m2 ? "YES":"NO") << '\n';
    }
}
 