### How is the function differentiable in graph?

If the graph of the function is a continuous line then the function is differentiable. Also if the graph suddenly make a deviation at any point then the function is not differentiable at that point . The slope of a tangent at any point of the graph gives the derivative of the function at that point.

### What is a circle graph?

It's a circle that kind of looks like a pizza cut into pieces. Usually, the pieces are labeled as something (usually you compare things with a circle graph) and normally have percents along with the label. I'm sorry, I explained it the best way I could. If you have any questions, please e-mail me. To learn more about a circle graph; Also known as pie graph, check this out! http://www.fedstats.gov/kids/mapstats/sconcepts_pie.html < Copy and paste into…