Give the focus, directrix, and axis for the parabola.y2 = -8x
A. (-2, 0), y = 2, y-axis
B. (-2, 0), x = 2, x-axis
C. (0, -2), y = 2, y-axis
D. (2, 0), x = -2, x-axis
Answer: B
Mathematics
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A. 0.77 km B. 7.7 km C. 770,000 km D. 77 km
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Use the product rule to simplify the radical.
A. 3
B. 9
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