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A and B are constants such that the graphs of xy = B and y = Ax^2 + B intersect at the points (2,8).  Write the ordered pair (A,B).

 Jun 12, 2021

Best Answer 

 #1
avatar+33689 
+2

xy = b    sub in the point given

2*8 = b = 16

 

y = a x^2 + b      sub in the point given....and b

8 = a (2^2) + 16

8 = 4a + 16

-8 = 4a

a = -2

 

-2,16

 Jun 12, 2021
 #1
avatar+33689 
+2
Best Answer

xy = b    sub in the point given

2*8 = b = 16

 

y = a x^2 + b      sub in the point given....and b

8 = a (2^2) + 16

8 = 4a + 16

-8 = 4a

a = -2

 

-2,16

ElectricPavlov Jun 12, 2021

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