Clifford R.
asked • 05/23/16Why does the equation for the line of symnetry (of a parabola) make sense?
the equation is (b/2a)
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1 Expert Answer
Kenneth S. answered • 05/23/16
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Why does the equation for the line of symMetry (of a parabola) make sense?
ANSWER: because it's the average of the two zeros (x-intercepts)--even if they're imaginary!
Its equation is x = -b/(2a), which relates to the quadratic equation but without the displacements, to left and right, of the part that involves the square root of the discriminant.
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Michael J.
05/23/16