Question 530678
y = 2x^2 + 12x - 13
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The axis of symmetry is defined by x = -b/2a.
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-12/(2*2) = -3
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Set x= -3 and find y.
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2(-3)^2 +12(-3) -13 = 18 -36 -13 = -31
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The vertex is: (-3,-31)
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{{{ graph(500,500,-15,5,-40,40,2*x^2+12*x-13) }}}