### Home > A2C > Chapter 4 > Lesson 4.2.3 > Problem4-108

4-108.

Find the $x$- and $y$-intercepts and the vertex of $y = x^{2} + 2x − 80$, sketch the graph, and write the equation in graphing form.

Find the $x$-intercepts and use them to locate the vertex.

$y = \left(x + 1\right)^{2} − 81$