(a) In the pair (0,5), the second number also known as ordinate represents the distance from X-axis, i.e. 5.
(b) In the pair (2,3), 2 is the first number, also known as abscissa represents the distance from Y-axis that is 2.
(c) We have the coordinates (4,8). Clearly, Y-coordinate is double of X-coordinate.
(d) We have the coordinate (3,7), where X-coordinate=3 and Y-coordinate=7. Evidently, Y-coordinate =2 × (X-coordinate)+1
(e) (0,0) are the coordinates of origin.
(f) In the point (5,0), the Y-coordinate is zero.
Hence, (a)→iv, (b)→vi, (c)→v, (d)→i, (e)→ii, (f)→iii.