Find the vertex, the focus, and the directrix of the parabola.y = 2x2 + 4x + 6 = 0
A. V: ; F: (-1, 12); D: x = 4
B. V: ; F:
; D: x =
C. V: (-1, 4); F: ; D: y =
D. V: ; F: (-1, 6); D: x = 2
Answer: C
Mathematics
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Determine whether the graph is the graph of a function.
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Solve the equation by the method of your choice. Simplify irrational solutions, if possible.2x2 = 14
A. {±7}
B. {}
C. {±}
D. {±8}
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The following comparison line graph indicates the number of vehicles sold for a seven week period by two different salespeople. Use the graph to answer the question.During what week did Pat sell the fewest number of vehicles?
A. Week 1 B. Week 3 C. Week 7 D. Week 5
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Write a linear inequality that describes the shaded region.
A. y ? -2x - 2 B. y ? 2x - 2 C. y ? -2x + 2 D. y ? -2x + 2
Mathematics