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This parabola can be modeled by the quadratic function y = 0.00012x2 + 6, where x represents the distance form the axis of symmetry and y represents the height of the cables.  The related quadratic equation is 0.00012x2 +6 = 0.

Calculate the value of the discriminant.

a.
-0.00056
c.
-0.00126
b.
-0.00288
d.
-0.00078

1 Answer

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The discriminant,


\Delta=b^2-4ac

From,


ax^2+bx+c=0

So,


\Delta=-4(0.00012)6=-0.00288
User Andrei Colta
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