Allypally
How do I graph y=x2+6x+5
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OpenSessame
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Do you have a TI-83?
Allypally
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No
OpenSessame
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Ohkay...
OpenSessame
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look at the graph and then ill explain how you can draw the parabola.
Allypally
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Ok that equation isn't the same as mine
OpenSessame
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I know, but i just wanted you to see sort of what it would look like...
Allypally
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Oh ok I know how to solve it, but when I graph it it doesn't curve
OpenSessame
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What do you mean?
OpenSessame
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Did you do the three point thing?
Allypally
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No
OpenSessame
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You should do that...Find the Lowest point.
OpenSessame
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You can either make a table or factor it to get started.
OpenSessame
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|dw:1377833307947:dw|
OpenSessame
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Continue the table!
Allypally
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|dw:1377833554345:dw|
Allypally
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the thing is no matter how much I ad the graph never curves
Allypally
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add**
Luigi0210
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Welcome to openstudy :)
Do you need any more help?
OpenSessame
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Hmm...Let me graph it on my calc and see whats up!
OpenSessame
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IT CURVES!
wolf1728
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You can get a rough idea of the graph from 2 things:
1) The coefficient of x²
If it is positive, the graph will be concave up. (shaped like a 'U').
2) Solve for x.
The roots of the equation are -1 and -5
These are the two points where the parabola crosses the x axis.
With this small amount of information, we can make a rough graph of the equation.