#include <iostream>
using namespace std;

int main(void) {
  int n;
  cin >> n;
  while (n--) {
    double x1, y1, x2, y2, x3, y3, x4, y4;
    bool flag;
    cin >> x1 >> y1 >> x2 >> y2
	>> x3 >> y3 >> x4 >> y4;

    if (x1 == x2) {
      if (x3 == x4) {
	flag = true;
      } else {
	flag = false;
      }
    } else if (x3 == x4) {
      flag = false;
    } else {
      if ( (y2 - y1) / (x2 - x1) == (y4 - y3) / (x4 - x3) ) {
	flag = true;
      } else {
	flag = false;
      }
    }
    /*
      if (x1 == x2 || x3 == x4) {
      if (x1 == x2 && x3 == x4) flag = true;
      } else {
      ang1 = (y2 - y1) / (x2 - x1);
      ang2 = (y4 - y3) / (x4 - x3);
      if (ang1 == ang2) flag = true;
      }
    */
    if (flag) {
      cout << "YES" << endl;
    } else {
      cout << "NO" << endl;
    }
  }
  return 0;
}