What type of graph do you get forx = – 2?Ī straight line parallel to Y-axis at a distance of 2 units from origin lying in the left side of Y-axis.Ī point (- 2,- 6) lies in which quadrant? What is the image of (- 1, 4) in 3rd quadrant? What is the image of (- 3, -1) in 2nd quadrant? What type of graph do you get for y = – 2?Ī straight line parallel to X-axis at a distance of 2 units from origin below the X-axis. – 2, because is third quadrant y-coordinate is negative. What is the ordinate of point lying in third quadrant at a distance of 2 units from X-axis and 5 units from Y-axis? This activity is very useful in locating the position of a particular country/city or a place on map. The coordinates of the points plotted on the graph paper have been found.
y-coordinate or ordinate)Ĭare should be taken while reading the coordinates, otherwise the location of the object will differ.įill the above table for different points on the given graph. PN = -2 units (distance from X-axis, i.e. Draw perpendiculars PM and PN from P to X-axis and Y-axis, respectively. If P is a point plotted on graph paper and we have to find the abscissa and ordinate of point P. Now, look at the graph paper and the points whose abscissae and ordinates are to be found.Now, paste the graph paper with various points drawn on it in the’ middle of white paper.Take a cardboard of suitable size and paste a white paper on it.Position of (y, x) will be different from (x, y). The order of x and y is important in (x, y). Here, the x-coordinate comes first and after this y-coordinate comes. X-coordinate and y-coordinate taken together are called cartesian coordinates or coordinates of a point and denoted by (x, y). The y-coordinate is also called the ordinate. (ii) The y-coordinate of a point is the perpendicular distance from the X-axis measured along the Y-axis (positive, along the positive direction of the Y-axis and negative, along the negative direction of Y-axis). The x-coordinate is also called the abscissa. (i) The x-coordinate of a point is the perpendicular distance from the Y-axis measured along the X-axis (positive, along the positive direction of the X-axis and negative, along the negative direction of X-axis). Each point in cartesian plane has two coordinates x-coordinate and y-coordinate. To locate a point in the cartesian plane, its perpendicular distances from X-axis and Y-axis are required, these distances are called coordinates of the point. Coordinates of a Point in Cartesian Plane Any line perpendicular to the Y-axis is parallel to the X-axis.Ģ.Any line perpendicular to the X-axis is parallel to the Y-axis.The angle between the horizontal and vertical axes is 90°.16.1Īnd OY are called the positive directions of X-axis and Y-axis, respectively and directions OX’ and OY’ are called the negative directions of X-axis and Y-axis, respectively. The horizontal line XOX’ is called X-axis and the vertical line YOY’ is called Y-axis. In other words, the point from which distances are marked is called origin. The point of intersection of these lines is called origin and it is denoted by O. In cartesian system, there are two perpendicular directed straight lines XX’ and YY’ which intersect at point 0, then line XX’ will be horizontal line and YY’ will be vertical line, shown x’ as alongside figure. The system used to describe the position of a point in a plane, is called cartesian system. To locate/plot a point in cartesian plane.Knowledge of cartesian coordinate system.
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