ORDINATE AND ABSCISSA PDF

A(3, 0) lies on positive direction of x-axis, B(3, 4) lies in 1st quadrant and C(0, 4) lies on positive direction of y-axis. (B) : Given, point 0(0, 0) is the origin. Which of the following figure is obtained? Hence, the point P has y-coordinate = 5 or – 5. Since, foot of perpendicular lies on the negative direction of x-axis, therefore perpendicular distance can be measured in II or III quadrant. (D) : As we know, the perpendicular distance of a point from the x-axis gives y-coordinate of that point. If the perpendicular distance of a point P from the x-axis is 5 units and the foot of the perpendicular lies on the negative direction of x-axis, then the point P has In point (2, -5), x-coordinate is positive and y-coordinate is negative, therefore it lies in IV quadrant. (C) : In point (-5, 2), x-coordinate is negative and y-coordinate is positive, therefore it lies in II quadrant. The points (- 5,2) and (2, – 5) lie in the Distance of y-coordinate of a point is zero, then this point always lies on x-axis. (C) : Perpendicular distance of the point from x-axis measured along y-axis is zero. If y coordinate of a point is zero, then this point always lies Hence, given points do not lie in the same quadrant. Therefore, they all lie in IV quadrant.īut in point (- 3, – 4), x-coordinate is negative and y-coordinate is negative.

(D): In points (1, -1), (2, – 2) and (4, – 5), x-coordinate is positive and y-coordinate is negative. ∴ A point both of whose coordinates are negative will lie in III quadrant. (C) : In III quadrant, x-coordinate and y-coordinate both are negative. (C) : The point at which the two coordinate axes meet is called the origin, yĪ point both of whose coordinates are negative will lie in The point at which the two coordinate axes meet is called the Thus, ordinate of all points on the x-axis is zero. If point lies on x-axis, then the perpendicular distance of point from x-axis will be zero, therefore ordinate will be zero. (A) : Ordinate (or y-coordinate) of a point is perpendicular distance of point from the x-axis measured along the y-axis. So, abscissa of all the points on the x-axis is any number. (D): Since x-axis is a number line which contains many real numbers on it.

(A) : In point (- 10, 0), y-coordinate is zero and its x-coordinate is negative, therefore the point (-10, 0) lies on the x-axis in the negative direction.Ībscissa of all the points on the x-axis is (B) on the negative direction of the y-axis (A) on the negative direction of the x-axis (C) : In point (0, -7), x-coordinate is zero, so it lies on y-axis and y-coordinate is negative, therefore the point (0, – 7) lies on the y-axis in the negative direction. Therefore, x-coordinate or sign of abscissa of a point is and y-coordinate or sign of ordinate of a point is ‘+’. (C) : In second quadrant, x-axis is negative and y-axis is positive. Signs of abscissa and ordinate of a point in the second quadrant are respectively Therefore, the point lies in the second quadrant. In point (- 3, 5), x-coordinate is negative and y-coordinate is positive. Write the correct answer in each of the following: NCERT Exemplar Class 9 Maths Chapter 3 Coordinate Geometry NCERT Exemplar Class 9 Maths Chapter 3 Exercise 3.1

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ORDINATE AND ABSCISSA PDF

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Ordinate and abscissa