1. The problem statement, all variables and given/known data Define the function over the four intervals in order to find the area under the curve from [-4,6]. To do so, find the equations of the line and circle, using the data in the graph. 2. Relevant equations None? 3. The attempt at a solution To be honest, there is no attempt at a solution except staring at it for 4 hours. Given a function, I can integrate. But findind the equation based on the graph confuses me. It has been years since I last did such a thing.