Class 9 · Mathematics · Ganita Manjari

1. Orienting Yourself: The Use of Coordinates

Try question 1

In which quadrant does the point (−3, 4) lie?

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Answer and explanation

Answer: B. Second

x is negative and y is positive, which is the second quadrant.

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Try question 2

Every point on the x-axis has

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Answer and explanation

Answer: B. y-coordinate 0

Points on the x-axis are at zero height, so y = 0.

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Try question 3

The x-coordinate of a point is also called its

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Answer and explanation

Answer: B. abscissa

x-coordinate = abscissa; y-coordinate = ordinate.

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