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Which of the following values of the variable x, (a)x = 0, (b)x = -3,...

Mathematics
JAMB 1979

Which of the following values of the variable x, (a)x = 0, (b)x = -3, (c)x = 9, satisfy the inequalities 0 < \(\frac{x + 3}{x - 1}\) < 2?

  • A. (a), (b), (c)
  • B. (c)
  • C. None of the choices
  • D. All of the above
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Correct Answer: Option B
Explanation

0 < \(\frac{x + 3}{x - 1}\) < 2

Put x = 0, -3 and 9

0 < \(\frac{9 + 3}{9 - 1}\) \(\leq\) 2

i.e. 0 < 1.5 \(\leq\) 2 (true)

but 0 < \(\frac{0 + 3}{0 - 1}\) \(\leq\) 2

i.e. 0 < -3 \(\leq\) 2 (not true)

-3 \(\leq\) 2

-3 is not greater than 0


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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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