the vertex is a minimum turning point If k < 0, the vertex is a maximum turning point We can identify these properties from a quadratics graph or equation.

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 ...