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Determine if the graph of the function opens up or down. Explain how you know

Determine if the graph of the function opens up or down. Explain how you know-example-1
User Grant Collins
by
3.0k points

1 Answer

20 votes
20 votes

Answer:

Opens up

Explanation:

x^2+2x-15

Standard form: ax^2+bx+c

If a<0, then the graph opens down

If a>0, then the graph opens up.

In this case: 1x^2+2x-15

a=1

Since 1>0 then the graph opens up.

User Donato Azevedo
by
3.1k points
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