If nonzero numbers a, b, c are in H.P.,
If nonzero numbers a, b, c are in H.P., then the straight line x/a + y/b + 1/c =0 always passes through a fixed point. That point is
(a) (–1, –2)
(b) (–1, 2)
(c) (1, -1/2)
(d) (1, –2).
4 views
1 Answers
(d) : Let us take the two set of values of a = 1, b = 1/2, c = 1/3 and a = 1/2, b = 1/3, c = 1/4
Putting these value in the given equation we get
x + 2y + 3 = 0 and 2x + 3y + 4 = 0 } *
solving the equations of * we have x = 1, y = –2
(1, –2) is required point on the line.
4 views
Answered