How to draw/plot a graph in LibreOffice impress

Hello,
I want to draw a simple graph (like graph of Coulomb interaction graph/Lennard Jones potential graph) ie., there are no exact scales required for the x and y-axis planes…
How do i draw it…

Thank you

Use Calc. A Chart copied from a Calc document you can paste as an independent object into one of your slides. It will contain the data then and will no longer depend on Calc.