aoj0021.py

#! -*- coding: utf-8-unix -*-
import math

if __name__=='__main__':
  n = int(raw_input())
  for i in xrange(n):
    x1, y1, x2, y2, x3, y3, x4, y4 = map(float, raw_input().strip().split(' '))
    if math.fabs((y2 - y1) * (x4 - x3) - (y4 - y3) * (x2 - x1)) < 1e-10:
      print 'YES'
    else:
      print 'NO'