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34kurt
3 years ago
9

Evaluate W squared - 4 W + 5 When w equals -4

Mathematics
1 answer:
natka813 [3]3 years ago
8 0

W^2-4+5 ; when w =-4


-4^2-4+5


-16-4+5


-20+5


-15

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The correct answer is:  [C]:  " (0, 24) " .
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Explanation:
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Given the quadratic function:
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          →  "  y = (x <span>− 8) (x + 3) "  ;   </span>←  Note:  Replace the "f(x)" with: "y" ; 

→  Find the "y-intercept".
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→  Note:  The "y-intercept" is the coordinate of the point(s) of the graph of the equation at which the graph crosses the "x-axis" when "x = 0" . 

   → So;  we set plug in "0" for "x" into our equation; and solve for "y" ; 

          → " y = (x − 8) (x + 3) " ;

          →   y = (0 − 8) (0 + 3)  ; 

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So, the "y -intercept" of the <em><u>given</u></em> quadratic function is:
 
the point at which:  "x = 0 ; y = -24 " ;

      →  that is; the point  the coordinates:  " (0, - 24) " ;
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  →  which is:  Answer choice:  [C]:  " (0, - 24) " .
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