The co-ordinate axes separate the plane into four regions called the quadrants. By custom the quadrants are numbered I, II, III, IV, in the counter clockwise direction as shown in the figure. (i) For distances along the x-axis, positive values are measured to the right of the origin and negative values to its left. (ii) For distances along the y-axis, positive values are measured upward above x-axis and negative values downward below x-axis. Study the table given below for clear understanding.RegionQuadrant NameValue of x and ySign of (x, y)XOY1st quadrantx > 0, y > 0(+, +)YOX′2nd quadrantx < 0, y > 0(–, +)X′OY′3rd quadrantx < 0, y < 0(–, –)XOY′4th quadrantx > 0, y < 0(+, –)