The equation of a straight line whose inclination with x-axis is 30° and whose y-intercept is –4, is:

1. $\sqrt{3}x - y - 4\sqrt{3} = 0$

2. $x + \sqrt{3}y - 4\sqrt{3} = 0$

3. $x - \sqrt{3}y - 4\sqrt{3} = 0$

4. $\sqrt{3}x + y - 4\sqrt{3} = 0$

The slope of the straight line passing through the points A(3, –2) and B(3, –4) is:

1. 0

2. 1

3. –2

4. not defined

If the slope of the line passing through the points (2, 5) and (k, 3) is 2, then the value of k is:

1. 0

2. –1

3. 1

4. 2

What can be said regarding a straight line if its slope is negative?

1. Inclination, θ is an acute angle.

2. Inclination, θ is an obtuse angle.

3. Either the line is x-axis or it is parallel to the x-axis.

4. Either the line is y-axis or it is parallel to the y-axis.