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

The slope of line is $\sqrt{3}$, its inclination is :

1. 30°

2. 45°

3. 60°

4. 90°

The inclination of a line passing through the points (4, 3) and (5, 4) is :

1. 1

2. -1

3. 45°

4. 60°

The slope of the line which is perpendicular to the line segment joining the points (8, -5) and (-4, 7) is :

1. -1

2. 1

3. 45°

4. -45°