If a parabola opens upward, then its minimum point is the vertex.
See solution.
Practice makes perfect
Let's start by plotting the points (- 4,2) and (6,- 3). We are told that the parabola opens upward, and therefore its vertex is the minimum point of the curve.
We see above that the point (6,- 3) is below (- 4,2). Therefore, (- 4,2) is not the minimum point of a parabola that opens upward and also passes through (6,- 3). This means it is not the vertex.
