Question

The point of intersection of the lines $\frac{x}{a}$ + $\frac{y}{b}$ = 1 and

$\frac{x}{b}$ +$\frac{y}{a}$= 1 lies on the line –

• A. x – y = 0
• B. (x + y) (a + b) = 2ab
• C. (lx + my) (a + b) = (l + m)ab
• D. All of these

Answer 1

Answer: (D)

All of these

Answer 2

$\frac{x}{a} + \frac{y}{b} = 1$.......(i); $\frac{x}{b} + \frac{y}{a} = 1$..........(ii)

Solve (i) & (ii) Ž To find the coordinates of the point of intersection. & check by option.