Quantitative Aptitude Ques 1697

Question: Find the equation of the line which makes equal intercepts on the axis and passes through the point (4, 5).

Options:

A) $ x+y=9 $

B) $ x+2y=7 $

C) $ 2x+2y=7 $

D) $ 2x+y=7 $

E) None of the above

Show Answer

Answer:

Correct Answer: A

Solution:

  • Let intercepts made by line be a. Equation of line is $ \frac{x}{a}+\frac{y}{a}=1 $

$ \Rightarrow $ $ x+y=a $ … (i) But this line passes through (4, 5).

$ \therefore $ $ 4+5=a $
$ \Rightarrow $ $ a=9 $ On putting this value in Eq. (i), we get $ x+y=9 $