alleryStart learning →In the rectangular coordinate system, what does an ordered pair (x, y) give?
AThe slope and intercept of a line
BThe two solutions of a quadratic equation
CThe width and height of a rectangle
DThe coordinates of a point in the plane
Answer & Solution
Correct answer: D. The coordinates of a point in the plane
1. The definition states directly that an ordered pair (x, y) gives the coordinates of a point in a rectangular coordinate system.
2. Slope and intercepts describe a line, and the dimensions of a rectangle are unrelated ideas, neither of which an ordered pair represents.
3. The x-coordinate is always listed first and the y-coordinate second, which is why the order in an ordered pair matters.
_Source: OpenStax Elementary Algebra (CC BY 4.0), Ch 4 "Graphs", section 4.1 Use the Rectangular Coordinate System_
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