Question 197426
Find the vertex of the given parabola. Give all values correct to 3 decimal places.
y = 4x^2 - 5x + 4 
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a = 4, b = -5, c = 4
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x = 5/(2*4) = 5/8
000000000000000000000000000
f(5/8) = 4(5/8)^2 - 5(5/8) + 4
f(5/8) = (25/16) - (50/16) + (64/16)
f(5/8) = (39/16)
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Vertex: (5/8, 39/16)
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{{{graph(400,300,-10,10,-10,10,4x^2 - 5x + 4)}}}
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Cheers,
Stan H.