title: What is the difference between ViewPropertyAnimator's translateYBy() vs yBy() methods?
body: <p>ViewPropertyAnimators (<a href="http://developer.android.com/reference/android/view/ViewPropertyAnimator.html">http://developer.android.com/reference/android/view/ViewPropertyAnimator.html</a>) have two types of methods to move Views around: </p>
  
  <p>translateX() vs x(), translateY() vs y(), translateXBy() vs xBy() and finally translateYBy() vs yBy(). </p>
  
  <p>Can someone tell me the difference between these methods?</p>