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Sullivan Curry
Mathematics
25 June, 10:19
Vertex of y=2x^2-16x+8
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Clare Mahoney
25 June, 10:47
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First you use the formula (-b/2a) to find the axis of symmetry (or the x value) and then you plug that into the equation to find the y value.
a = 2
b = - 16
16/2 (2) = 16/4=4
(4, x) so we have the x-value and now we plug 4 into the original equation
y=2 (4) ^2-16 (4) + 8
y=2 (16) - 64+8
y=32-64+8
y=-24
So the vertex is at (4,-24)
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