Answer
$(9,36)$
Work Step by Step
The solution to Exercise 132 was $9$. On the given graph, the $x$-value $9$ corresponds with the $y$-value $36$.
$N=\frac{x^2-x}{2}$
$N=\frac{72}{2}$
$N=36$
$(9,36)$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.