y > 2x - 12x > 5Which of the following consists of the y-coordinates of all the points that satisfy the system of inequalities above?

Correct answer: B. y > 4

  • A. y > 6
  • B. y > 4
  • C. y > 5/2
  • D. y > 3/2

Explanation

Choice B is correct. Subtracting the same number from each side of an inequality gives an equivalent inequality. Hence, subtracting 1 from each side of the inequality 2x > 5 gives 2x − 1 > 4. So the given system of inequalities is equivalent to the system of inequalities y > 2x − 1 and 2x − 1 > 4, which can be rewritten as y > 2x − 1 > 4. Using the transitive property of inequalities, it follows that y > 4.

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