#include <iostream>
#include <complex>
#include <vector>
#include <cstdio>
using namespace std;

const double EPS = 1e-8;
const double INF = 1e12;
typedef complex<double> P;

bool operator < (const P& a, const P& b) {
  return real(a) != real(b) ? real(a) < real(b) : imag(a) < imag(b);
}

double cross(const P& a, const P& b) {
  return imag(conj(a)*b);
}
double dot(const P& a, const P& b) {
  return real(conj(a)*b);
}
struct L : public vector<P> {
  L(const P &a, const P &b) {
    push_back(a); push_back(b);
  }
};

int ccw(P a, P b, P c) {
  b -= a; c -= a;
  if (cross(b, c) > 0)   return +1;       // counter clockwise
  if (cross(b, c) < 0)   return -1;       // clockwise
  if (dot(b, c) < 0)     return +2;       // c--a--b on line
  if (norm(b) < norm(c)) return -2;       // a--b--c on line
  return 0;
}

int main() {
  int n;
  cin >> n;
  while(n--) {
    P p[4];
    for (int i=0; i<4; i++) {
      double x,y;
      cin >> x >> y;
      p[i] = P(x,y);
    }
    if (abs(cross(p[1]-p[0], p[3]-p[2])) < EPS)
      cout << "YES" << endl;
    else
      cout << "NO" << endl;
  }
}