Vertex of Parabola
Source:
January 11, 2009
conicsparabolacalculus
Problem Statement
The vertex of the parabola y \equal{} x^2 \minus{} 8x \plus{} c will be a point on the -axis if the value of is:
(A)\ \minus{} 16 \qquad (B)\ \minus{} 4 \qquad (C)\ 4 \qquad (D)\ 8 \qquad (E)\ 16