# SOLUTION: I am trying to graph y=-x^2 -8x +9, I am not sure how to solve and graph

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Question 153191: I am trying to graph y=-x^2 -8x +9, I am not sure how to solve and graph
You can put this solution on YOUR website!

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

Let's find y when

Plug in .

Square to get .

Multiply and to get .

Multiply and to get .

Combine like terms.

So when , then .

So we have the point .

----------------------------------------------------

Let's find y when :

Plug in .

Square to get .

Multiply and to get .

Multiply and to get .

Combine like terms.

So when , then .

So we have the point .

----------------------------------------------------

Let's find y when :

Plug in .

Square to get .

Multiply and to get .

Multiply and to get .

Combine like terms.

So when , then .

So we have the point .

----------------------------------------------------

Let's find y when :

Plug in .

Square to get .

Multiply and to get .

Multiply and to get .

Combine like terms.

So when , then .

So we have the point .

----------------------------------------------------

Let's find y when :

Plug in .

Square to get .

Multiply and to get .

Multiply and to get .

Combine like terms.

So when , then .

So we have the point .

----------------------------------------------------

Let's find y when :

Plug in .

Square to get .

Multiply and to get .

Multiply and to get .

Combine like terms.

So when , then .

So we have the point .

----------------------------------------------------

Let's find y when :

Plug in .

Square to get .

Multiply and to get .

Multiply and to get .

Combine like terms.

So when , then .

So we have the point .

----------------------------------------------------

Let's find y when :

Plug in .

Square to get .

Multiply and to get .

Multiply and to get .

Combine like terms.

So when , then .

So we have the point .

----------------------------------------------------

Let's find y when :

Plug in .

Square to get .

Multiply and to get .

Multiply and to get .

Combine like terms.

So when , then .

So we have the point .

----------------------------------------------------

Let's find y when :

Plug in .

Square to get .

Multiply and to get .

Multiply and to get .

Combine like terms.

So when , then .

So we have the point .

----------------------------------------------------

Let's find y when :

Plug in .

Square to get .

Multiply and to get .

Multiply and to get .

Combine like terms.

So when , then .

So we have the point .

----------------------------------------------------

Now let's make a table of the values we just found.

#### Table of Values:



xy-90
-89
-716
-621
-524
-425
-324
-221
-116
09
10



Now let's plot the points: