n = $stdin.gets.chomp.to_i
n.times do |n|
  x1, y1, x2, y2, x3, y3, x4, y4 = gets.chomp.split.map(&:to_f)
 
  a = (y2-y1)/(x2-x1)
  b = (y4-y3)/(x4-x3)
 
  if (a-b < 1e-6)
    puts "YES"
  else
    puts "NO"
  end
end