Like with the previous post, all of the 'a' values are in the correct locations. No changes need to be made.
The parabola opening upward in the middle has a > 0. Positive 'a' values lead to parabolas opening upward.
Negative 'a' values mean the parabola opens downward. As 'a' gets further from zero, the parabola will get more narrow. We see the very left graph is more narrow than the graph on the very right.
