+0  
 
0
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avatar+233 

Graph ​ g(x)=−2x^2−12x−24 ​

Use the parabola tool then choose the vertex followed by one point on the parabola.

 Jan 15, 2019
 #1
avatar+111435 
+2

The x coordinate of the vertex is given by    - (-12) / (2 * - 2)  =  12/ -4  = - 3

Putting this back into the function to get the y coordinate of the vertex we have

-2(-3)^2 - 12(-3) - 24  =   

-18 + 36 - 24 = 

- 6

 

So....the vertex is  (-3, -6)

 

And we can find another point by letting x = 0

-2(0)^2 - 12(0)  - 24 =

-24

 

So...the second point is  (0, -24)

 

Here's the graph :  https://www.desmos.com/calculator/synw1wfvuo

 

 

cool cool cool

 Jan 15, 2019
 #2
avatar+233 
+1

thank you

 Jan 15, 2019
 #3
avatar+111435 
0

No prob, skye....!!!!

 

 

 

cool cool cool

CPhill  Jan 15, 2019

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