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anonymous
 4 years ago
What is the equation of the line of symmetry for the graph of y = 3(x + 2)^2  4?
x = 4
x = 2
x = 2
x = 3
anonymous
 4 years ago
What is the equation of the line of symmetry for the graph of y = 3(x + 2)^2  4? x = 4 x = 2 x = 2 x = 3

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0here we are looking for the x coordinate of the vertex. y=a(x h)^2 +k where the vertex is given by (h,k) so with your equation what will the x symmetry line be?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0close if I put x=2 back into the equation I will get this y=a(x 2)^2 +k but we have y = 3(x + 2)^2  4 so x=2. to check put it back into the equation y=a(x (2))^2 +k y=a(x +2)^2 +k

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ohhh i see... thank you

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0also. the vertex = b/2a, that will give you the line of symmetry x coord also since the vertex is directly in the middle :)
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