The distance between the points (7, -5) and (3, -1) is :

1. 4 units

2. 3 units

3. $4{\sqrt2}$ units

4. 5 units

The distance between the points (-3, 2) and (x, 10) is 10 units. The value of x is :

1. 3

2. -9

3. 3 or -9

4. 3 and -9

The point (x, y) is equidistant from the points (3, 6) and (-3, 4); the relation between x and y is :

1. 3x - y = 5

2. 3x - y - 5 = 0

3. y - 3x = 0

4. 3x + y = 5

The perimeter of a triangle with vertices (0, 4), (0, 0) and (3, 0) is :

1. 12 units

2. 6 units

3. 5 units

4. 10 units