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Chapter 10: Q. 301 (page 1238)

In the following exercises, determine if the following parabolas open up or down.

y=x2+8x-1

Short Answer

Expert verified

The parabola of given function opens up.

Step by step solution

01

Given information

The given expression is:y=x2+8x-1

02

Determine whether the parabola opens up or down.

The standard form is y=a2+bx+c

Now compare the given equation with standard form, we get.

a=1

Since the value of ais negative, so the given parabola opens up.

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