#!/usr/bin/env ruby

n = gets.chomp!.to_i

n.times do
  x1, y1, x2, y2, x3, y3, x4, y4 = gets.chomp!.split(" ").map(&:to_f)

  puts (((x2 - x1) / (y2 - y1)).round(5) == ((x4 - x3) / (y4 - y3)).round(5)) ? "YES" : "NO"
end