4. The diagram on the right shows a part of the curve y = a + b/x The line 3y - x = 14 is a normal to the curve
y = axta
3y-x= 14
e
P(1,5)
at P(1,5) and this normal intersects the curve again at Q.
Find
(a) the values of a and b,
(b) the equation of tangent at point P.
(e) the coordinates of Q,
(d) the coordinates of the midpoint of PQ.
0