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Identify the equation of the graph shown.                                                            

A)y = 2x + 3

B)y = 2x - 3

C)y = -2x + 3

D)y = -2x - 3

 

 

Tammy knows that the factors of a polynomial are ƒ(x) = (x - 2)(x - 1)(x + 4) and the solutions are x = -4, 1, and 2. Which graph models the polynomial?                                                                                                         

A)

B)

C)

D)

jbouyer  Feb 17, 2018
 #1
avatar+87293 
+1

The first one is easy....the slope is negative  and the y intercept   is  3

 

In the form  y  =  mx  + b, m is the slope  and b is the y intercept

 

So...  the equation  y  =  -2x + 3   is the only one with a negative slope and a y intercept of 3

 

 

 

For the second...if -4, 1 and 2   are  solutions   to   0  = (x + 4)(x - 1)(x - 2)......so the graph intercepts the x axis  at   x = -4, x = -1  and x  = 2

 

"D" looks to be correct

 

 

cool cool cool

CPhill  Feb 17, 2018

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