I'm not too sure of how to work this one out, I'm really having trouble determining the extent of the graph. I have figured out that the x intercept is $\displaystyle \pm4$ and that the asymptotes are $\displaystyle y=\frac{5x}{4}$and$\displaystyle -\frac{}{5x}{4}$

Graph

Show how you arrived at your graph by determining the x-intercepts, the extent of the graph and the asymptotes.

A) I admit to being lost when it comes to this question, I know how to work these kind of questions under other situations where the x and y are reversed. E.g.:

. I am very lost as to what to do with this one though.

When I try to determine 'c' I come out with

I don't really see how that can be correct.

Thank you.