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Determine the direction this parabola opens:
Y=x^2+2x+8

Down or Up

Determine the direction this parabola opens: Y=x^2+2x+8 Down or Up-example-1
User Bhaller
by
8.3k points

2 Answers

1 vote
The best way to solve this is to make it a function.
f(x)= x^2 +2x +8
Plug in values of x from -3 to 3 and solve ordered pairs to graph.
-3^2 +2(-3) +8 -2^2 +2(-2) +8
9 +-6 +8 4 +-4 +8
3+8 (-2,8)
11
(-3,11)
Graph the remaining points and your solution will be right in front of you.
Graph those two points and you can tell that it opens up.

User Fifonik
by
8.3k points
4 votes
Hello there!

You need to find an online calculator that will help you graph them.

Answer: The direction is open UP


See the graph bellow!
Determine the direction this parabola opens: Y=x^2+2x+8 Down or Up-example-1
User Ambika
by
8.2k points

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