Question

I have the graphs but I do not understand how to write the equations needed to obtain them.

Answer 1

Actually, Even after getting graphs it is not easy to find equations needed to obtain them.

For some famous graphs like straight line, parabola, horizontal or vertical line we can easily write equation needed to get them. For other cases you need to divide graphs in these parts e.g. write equation for part where it is straight line seprately and where it is parabola seprately etc.

Even if you are unable to find equations now, then you can post your graph, we will help you.