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Which point lies in the common region of (y\ge x+1) and (y\le 5)?

Answer and explanation

Correct answer: ((2,4))

The direct answer is option C, the point \((2,4)\). A common region means that both inequalities must be true at the same point. For \((2,4)\), substitute \(x=2\) and \(y=4\): the first inequality becomes \(4\ge2+1=3\), which is true, and the second becomes \(4\le5\), which is also true. Therefore the point belongs to the intersection. Option A, \((5,5)\), fails because \(5\ge5+1\) means \(5\ge6\), which is false. Option B, \((3,3)\), satisfies \(3\ge4\) falsely, although it satisfies \(y\le5\); one failed condition is enough to reject it. Option C satisfies both conditions, so it is correct. Option D, \((4,6)\), satisfies \(6\ge5\), but fails \(6\le5\). Always test both inequalities, not just one. Memory cue: common region means AND, so every condition must pass.

Related tags

Linear InequalitiesCommon RegionPoint TestClass 11

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