Reasoning about rates - yellow bowties II

Drag the GREEN dots to make a yellow bowtie.[br][br]How does the total yellow area vary with horizontal position?[br][br]How does the total yellow area vary with vertical position?[br][br][[b][i]n.b. The right hand panel shows the area of the yellow bowtie.[/i][/b]]

Information: Reasoning about rates - yellow bowties II