How do you say not equal to in Ruby?

Question

This is a much simpler example of what I'm trying to do in my program but is a similar idea. In an, if statement how do I say not equal to?

Is != correct?

def test
  vara = 1
  varb = 2
  if vara == 1 && varb != 3
    puts "correct"
  else
    puts "false"
  end
end