1.

Write whether the following statements are True or False? Justify your answer.(i) Point (3, 0) lies in the first quadrant.(ii) Points (1, –1) and (–1, 1) lie in the same quadrant.(iii) The coordinates of a point whose ordinate is – ½ and abscissa is 1 are – ½ , 1.(iv) A point lies on y-axis at a distance of 2 units from the x-axis. Its coordinates are (2, 0).(v) (–1, 7) is a point in the II quadrant.

Answer»

(i) Point (3, 0) lies in the first quadrant.

False

Justification:

The ordinate of the point (3, 0) is zero.

Hence, the point lies on the x-axis

(ii) Points (1, –1) and (–1, 1) lie in the same quadrant.

False

Justification:

(1, -1) lies in IV quadrant

(-1, 1) lies in II quadrant.

(iii) The coordinates of a point whose ordinate is – ½ and abscissa is 1 are – ½ , 1.

False

Justification:

The coordinates of a point whose ordinate is – ½ and abscissa is 1 is (1, -1/2).

(iv) A point lies on y-axis at a distance of 2 units from the x-axis. Its coordinates are (2, 0).

False

Justification:

A point lies on y-axis at a distance of 2 units from the x-axis. Its coordinates are (0, 2).

(v) (–1, 7) is a point in the II quadrant.

True

Justification:

(–1, 7) is a point in the II quadrant.



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