Question
Question: Two points (a, 0) and (0, b) are joined by a straight line, Another point on this line is....
Two points (a, 0) and (0, b) are joined by a straight line, Another point on this line is.
A
(3a,−2b)
B
(a2,ab)
C
(−3a,2b)
D
(a,b)
Answer
(3a,−2b)
Explanation
Solution
Equation of the required line is, ax+by=1.
From option (1), only point (3a,−2b) lies on it.