Find the point of intersection of the lines 4x + 3y = 1 and 3x - y + 9 = 0. If this point lies on the line (2k - 1)x - 2y = 4; find the value of k.

Show that the lines 2x + 5y = 1, x - 3y = 6 and x + 5y + 2 = 0 are concurrent.

The slope of a line is 5, the slope of its perpendicular is :

1. 5

2. -5

3. $\dfrac{1}{5}$

4. $-\dfrac{1}{5}$

The slope of the line passing through the origin and the point (-3, 4) is :

1. $\dfrac{4}{3}$

2. $-\dfrac{4}{3}$

3. $\dfrac{3}{4}$

4. $-\dfrac{3}{4}$