Draw any two points B and $B\text{'}$. Then use a straightedge and compass to construct the line of reflection j so that $R_j\left(B\right)=B\text{'}$.

The given statement is that how to score a hole in one on the fifth hole of the golf course.

The construction of a line that represents $R_j\left(B\right)=B\text{'}$.

To construct a line that represents$R_j\left(B\right)=B\text{'}$

First take two points B and B’. using straightedge and compass draw an arc pointing straightedge at point B and then with same arc radius intersect the arc with pointing the straightedge at B’, you will get an intersection point. Again draw an arc with a different radius pointing straightedge at point B and then with same arc radius intersect the arc with pointing the straightedge at B’, you will get another intersection point.

Using these two intersection point draw a straight line j and this straight line will be the line of reflection. You can check if the line j is reflection line or not by joining B and B’, if the line j is perpendicular bisector of BB’ it means the line j is line of reflection in this case.

Hence, the construction of a line that represents $R_j\left(B\right)=B\text{'}$.