If x = 3, y = k is a solution of the equation 3x - 4y + 7 = 0, then the value of k is

1. 16

2. -16

3. 4

4. -4

The solution of the pair of linear equations 2x - y = 5 and 5x - y = 11 is

1. x = -1, y = 2

2. x = 2, y = -1

3. x = 0, y = -5

4. x = $\dfrac{5}{2}$, y = 0

The solution of the system of equations $\dfrac{4}{x} + 5y = 7 \text{ and } \dfrac{3}{x} + 4y = 5$ is

1. $x = \dfrac{1}{3}, y = -1$

2. $x = -\dfrac{1}{3}, y = 1$

3. x = 3, y = -1

4. x = -3, y = 1

A pair of linear equations which has a unique solution x = 2, y = -3 is

1. x + y = -1
   2x - 3y = -5

2. 2x + 5y = -11
   4x + 10y = -22

3. 2x - y = 1
   3x + 2y = 0

4. x - 4y - 14 = 0
   5x - y - 13 = 0