The slope of a line parallel to the line passing through the points A(3, –7) and B(5, –7) is:

1. 2

2. 1

3. –1

4. 0

The slope of a line perpendicular to the line passing through the points P(3, –4) and Q(1, –8) is:

1. $\dfrac{-1}{2}$

2. 2

3. $\dfrac{1}{2}$

4. –2

The slope of a line perpendicular to the line, 3x = 4y – 10, is :

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

2. $–\dfrac{4}{3}$

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

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

If the lines 2x + 3y = 5 and kx – 6y = 7 are parallel, then the value of k is:

1. –4

2. $–\dfrac{1}{4}$

3. 4

4. –5