How do I do thi question?

Question

An example of a wine glass design, using three equations, is given below. The base of the wine glass is defined by a quadratic equation, the stem by a linear equation and the body of the glass by a square root function. The difficult part of the task(outlined on the next page) is determining the correct coefficients in the equations so that the parts of the glass fit together. The equations must be accompanied by domain statements so that only the relevant section of the graph is included in the design