# Chapter 8 - Section 8.6 - Further Graphing of Quadratic Functions - Exercise Set: 76

maximum value

#### Work Step by Step

The value of $a$ determines whether the graph opens up or down. If $a$ is positive, the graph opens up; if $a$ is negative, the graph opens down. In this problem $a=-7$. Therefore the graph opens down and has a maximum value.

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