Question

The equation of the straight line passing through the point (3, 2) and perpendicular to the line y = x is

• A. x – y = 5
• B. x + y = 5
• C. x + y = 1
• D. x – y = 1

Answer 1

Answer: (B)

x + y = 5

Answer 2

Q Slope of line y = x is m₁ = 1

\ Slope of the line which is $\bot$ to the line

y = x is m₂ = $\frac{–1}{m_{1}}$= –1

Therefore, equation of line ̃ y – 2 = – 1(x – 3)

̃ x + y = 5