+0  
 
0
37
4
avatar+182 

Which graph represents the function?

 Jan 26, 2019
 #1
avatar+96207 
+2

x^2 - x - 2

 

Let's find the zeroes (where the function crosses the x axis)

 

Factor as

 

(x - 2) ( x + 1)  = 0

 

Set each factor to 0  and solve for x

 

x - 2 = 0                             x + 1 =  0

 

 x = 2                                    x = -1

 

Notice that the graph on the bottom left appears to be correct  !!!!

 

 

 

cool cool cool

 Jan 26, 2019
 #3
avatar+182 
+1

thank you 

skye25  Jan 26, 2019
 #2
avatar+46 
+3

the left corner one should be the answer because...

f(x)=x^2-x-2

 

f(0) = 0^2-0-2 which is -2      plug numbers in

 

the bottom left is the only one with points (0,-2)

 

smiley  

(CPhill's  is much more mathematical lol)

 Jan 26, 2019
 #4
avatar+182 
+1

thank you

skye25  Jan 26, 2019

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