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.

The equation of a straight line passing through the point (–6, 8) and parallel to the x-axis is:

1. x – 6 = 0

2. x + 6 = 0

3. y – 8 = 0

4. y + 8 = 0

The equation of the line passing through the points A(4, 3) and B(–2, 6) is :

1. x + 2y – 10 = 0

2. x – 2y – 6 = 0

3. x – 3y + 8 = 0

4. x + 2y – 6 = 0

The equation of a line passing through the point (5, –3) and having the y-intercept of 8 units below the x-axis is:

1. x + y – 8 = 0

2. x – y – 8 = 0

3. 2x + y – 4 = 0

4. x – 2y – 8 = 0