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HELP!!!!!

Part B
g(x)=−2x2+8x+3 (the second 2 is a exponet)

Write the function g(x) in the form y=a(x−h)2+k . Write the equation for the line of symmetry for the graph of g(x). Show all your work and explain your answer.

User Avanti
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1 Answer

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Solve for the x-max or h :\

-b/(2a)=-8/(2*-2)=2=k
plug it in to equation to get k:/

y(2)=-2(2)^2+8(2)+3
-8+16+3=11=k

y=a(x-2)^2+11
solve for a by pluging (0,0)
then a= -11/4

y=-11/4(x-2)^2+11

User John X
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