n = gets.to_i
n.times do 
   x1,y1,x2,y2,x3,y3,x4,y4 = gets.split(' ').map(&:to_i)
   if (y2 - y1)*(x4 - x3) == (y4 - y3)*(x2 - x1) || (y2 - y1)*(x4 - x3) == (y4 - y3)*(x1 - x2)
	  puts "YES"
   else
	  puts "NO"
   end
end