Explanation:
In mathematics, the coordinates of a point on a two-dimensional plane are given by two values called the abscissa and the ordinate. The abscissa represents the position of the point on the x-axis, and the ordinate represents the position of the point on the y-axis.

Given that the abscissa of a point is y and the ordinate is x, we can determine the coordinates of the point by substituting these values into the appropriate positions.

Let's break down the answer in detail:

Coordinates of a point:
The coordinates of a point on a two-dimensional plane are represented by an ordered pair (x, y), where x represents the abscissa and y represents the ordinate.

Given values:
According to the given information, the abscissa of the point is y and the ordinate is x.

Substituting values:
To find the coordinates of the point, we substitute the given values into the ordered pair (x, y).

- Since the abscissa is y, we substitute y for x.
- Similarly, since the ordinate is x, we substitute x for y.

Answer:
Substituting the values, we get (y, x) as the coordinates of the point. Therefore, the correct answer is option (b) (y, x).

Example:
Let's consider an example to illustrate this concept.

Suppose we have a point P with an abscissa of 3 and an ordinate of 5.

- The abscissa (x-coordinate) is 3.
- The ordinate (y-coordinate) is 5.

Substituting these values into the ordered pair (x, y), we get (3, 5) as the coordinates of the point P.

Therefore, the coordinates of the point P are (3, 5), which matches the format (y, x) as stated in option (b).

Conclusion:
In summary, the coordinates of a point on a two-dimensional plane are represented by an ordered pair (x, y). If the abscissa of a point is y and the ordinate is x, then the coordinates of the point will be (y, x).

Because abscissa is X cordinate and ordinate is Y cordinate and we write it ( X,Y) and if we interchange it it will be ( Y,X)