Direct Variation - as one value goes up, the other goes up accordingly.
Inverse Variation - as one value goes up, the other goes down.
►Accompanying worksheet for this video.
Algebra 2 - Direct and Inverse Variation from Yay Math on Vimeo.
At Virtual Nerd
►How Direct Variation looks on a graph Very good!!!
►What is Direct Variation or Directly Proportional?
►Constant of Variation - table
►Solving a word problem - has a fraction