### Home > INT2 > Chapter 9 > Lesson 9.1.3 > Problem 9-30

9-30.

Explain to her how she can get a good sketch of the graph of the function

without using a calculator*and*without making an→table. Be sure to explain how to locate the vertex, whether the parabola opens up or down, and how its shape is related to the shape of the graph of.There is a squared term, so this is a parabola.

The stretch factor is. How does this affect the graph?

Where is the vertex?Your friend also needs to know the

- and-intercepts. Help her determine them without drawing an accurate graph or using a graphing calculator.You can find the

- and- intercepts by solving forwhenand by solving forwhen.