In this part you do not have to sketch the graph and you may even be given the sketch of the graph to start with. For a quadratic equation ... the vertex is a maximum turning point We can identify ...

The graph of the quadratic function \(y = ax^2 + bx + c \) has a minimum turning point when \(a \textgreater 0 \) and a maximum turning point when a \(a \textless 0 \). The turning point lies on ...