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Mathematics 30 June 1999 Grade 12 Diploma Exam

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Use the following information to answer the next question.<br />

The parabola with vertex at (0, 0) is shown below.<br />

y<br />

x<br />

23. The graph above is formed by the equation Ax 2 + Cy 2 + Dx + Ey + F = 0 where<br />

one or more of the parameters A, C, D, E, and F must be zero. How many<br />

parameters are zero?<br />

A. 1 parameter<br />

B. 2 parameters<br />

C. 3 parameters<br />

D. 4 parameters<br />

15

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