n = STDIN.gets.chomp.to_i

n.times do
  x1, y1, x2, y2, x3, y3, x4, y4 = STDIN.gets.chomp.split(' ').map { |item| item.to_f }
  if (y2-y1)/(x2-x1) == (y4-y3)/(x4-x3) then
    puts "YES"
  else
    puts "NO"
  end 
end