Hi,

I am having trouble choosing equations that below to pictures of direction fields. Could anyone take a look at this attached picture and tell me what my teacher is saying? How do I know when I want x's and y's in the equation and when I don't? Like on the left the equation doesn't have an "x" variable and on the right one it does. Help?

Interpreting Graphs of Direction Fields-direction-fields-problem.png

Thank you