#include <bits/stdc++.h>
using namespace std;

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;

    double X1 = x2-x1, Y1 = y2-y1;
    double X2 = x4-x3, Y2 = y4-y3;

    if(abs(X1*Y2-X2*Y1) < 0.00000001) cout << "YES" << endl;
    else cout << "NO" << endl;
  }
}