SOLUTION: {{{ f(x) = 11(x-5)^2 +7 }}} a)Concave UP or DOWN b)Axis of symmetry c)Coordinates of Vertx

Algebra ->  Graphs -> SOLUTION: {{{ f(x) = 11(x-5)^2 +7 }}} a)Concave UP or DOWN b)Axis of symmetry c)Coordinates of Vertx      Log On


   

Question 249030: +f%28x%29+=+11%28x-5%29%5E2+%2B7+
a)Concave UP or DOWN
b)Axis of symmetry
c)Coordinates of Vertx
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
f(x) = 11(x-5)^2 +7
=11(x^2-10x+25)+7
=11x^2-110x+275+7
=11x^2-110x+282
a=11, b=-110, c=282
It has a minimum because a is positive.
axis of symmetry: x =-b/2a = 110/22 = 5
y=11(5-5)^2 +7 =7
coordinates of the vertex (5,7)
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Ed
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graph%28500%2C500%2C-2%2C8%2C-2%2C18%2C11%28x-5%29%5E2%2B7%29