The equation of a line parallel to x-axis and at a distance of 5 units below it, is:

1. x – 5 = 0

2. x + 5 = 0

3. y – 5 = 0

4. y + 5 = 0

The equation of a line parallel to y-axis and at a distance of 8 units to the right of it, is:

1. x – 8 = 0

2. x + 8 = 0

3. y – 5 = 0

4. y + 5 = 0

The slope m of a line whose inclination is α, is given by :

1. sin α

2. cos α

3. tan α

4. cot α

The equation of a line with slope m and passing through a point P(a, b), is given by :

1. (y – a) = m(x – b)

2. (x – b) = m(y – a)

3. (x – a) = m(y – b)

4. (y – b) = m(x – a)