17. The coordinates of the points P and Q are (2, 3)
and (9, 5) respectively.
(i) Find the coordinates of the point where the line
passing through P and Q intersects the x-axis.
(ii) Given that y = 5 is the line of symmetry of
PQR, find the coordinates of R.
(iii) Calculate the length of PQ.
(iv) Hence, find the length of the perpendicular
from R to PQ.