SOLUTION: I need some help I am having problems Graph the quadratic equation after completeing the given table of values. Y=-x^2+1 Table of value is X y -2 -1 0 1 2

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Question 93226: I need some help I am having problems

Graph the quadratic equation after completeing the given table of values. Y=-x^2+1

Table of value is
X y
-2
-1
0
1
2

Thank you
Found 2 solutions by Nate, jim_thompson5910:
Answer by Nate(3500)   (Show Source): You can put this solution on YOUR website!
I'll let you complete the table by filling in the values for x.
Connect the coordinates:
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!

In order to graph , we need to plot some points.

We can start at any x value, so lets start at x=-2




Lets find the value of y when

Start with the given polynomial


Plug in


Evaluate to get 4

Multiply -1 and 4 to get -4

Now combine like terms


So when ,



-------Now lets find another point-------



Lets find the value of y when

Start with the given polynomial


Plug in


Evaluate to get 1

Multiply -1 and 1 to get -1

Now combine like terms


So when ,



-------Now lets find another point-------



Lets find the value of y when

Start with the given polynomial


Plug in


Evaluate to get 0

Multiply -1 and 0 to get 0

Now combine like terms


So when ,



-------Now lets find another point-------



Lets find the value of y when

Start with the given polynomial


Plug in


Evaluate to get 1

Multiply -1 and 1 to get -1

Now combine like terms


So when ,



-------Now lets find another point-------



Lets find the value of y when

Start with the given polynomial


Plug in


Evaluate to get 4

Multiply -1 and 4 to get -4

Now combine like terms


So when ,


Now lets make a table of the values we have calculated 



 xy



 -2-3
 

 -10
 

 01
 

 10
 

 2-3
Now plot the points



Now connect the points to graph (note: the more points you plot, the easier it is to draw the graph)

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