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