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At which point of y = x³ is the tangent parallel to the line y = 12x + 1?
A(2, 8)
B(1, 1)
C(3, 27)
D(4, 64)
Answer & Solution
Correct answer: A. (2, 8)
Setting 3x² = 12 gives x = 2 (or −2), and the listed point with x = 2 is (2, 8).
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