#include <iostream>

using namespace std;
 
double kata(double x, double y, double xx, double yy)
{
    return (yy-y)/(xx-x);
}
 
int main()
{
    int n;
    cin >> n;
    for(int i=0;i<n;i++){
        double x1,y1,x2,y2,x3,y3,x4,y4;
        cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
        if(kata(x1,y1,x2,y2)==kata(x3,y3,x4,y4))
            cout << "YES" << endl;
        else
            cout << "NO" << endl;
    }

    return 0;

}