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Linear inequalities in one or two variables SAT question
Math · Algebra · Easy · Answer it here, explanation included.
The point in the xy-plane is a solution to which of the following systems of inequalities?
ExplanationShow
Choice A is correct. The given point, , is located in the first quadrant in the xy-plane. The system of inequalities in choice A represents all the points in the first quadrant in the xy-plane. Therefore, is a solution to the system of inequalities in choice A.
Alternate approach: Substituting for in the first inequality in choice A, , yields , which is true. Substituting for in the second inequality in choice A, , yields , which is true. Since the coordinates of the point make the inequalities and true, the point is a solution to the system of inequalities consisting of and .
Choice B is incorrect. This system of inequalities represents all the points in the fourth quadrant, not the first quadrant, in the xy-plane.
Choice C is incorrect. This system of inequalities represents all the points in the second quadrant, not the first quadrant, in the xy-plane.
Choice D is incorrect. This system of inequalities represents all the points in the third quadrant, not the first quadrant, in the xy-plane.
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