A (-2, 2), B (8, 2) and C (4, -4) are the vertices of a parallelogram ABCD. By plotting the given points on a graph paper; find the co-ordinates of the fourth vertex D.

Also, from the same graph, state the co-ordinates of the mid-points of the sides AB and CD.

A (- 2, 4), C (4, 10) and D (- 2, 10) are the vertices of a square ABCD. Use the graphical method to find the co-ordinates of the fourth vertex B. Also, find :

(i) the co-ordinates of the mid-point of BC;

(ii) the co-ordinates of the mid-point of CD and

(iii) the co-ordinates of the point of intersection of the diagonals of the square ABCD.

A line is parallel to y-axis and at a distance of 5 units on the positive side of the x-axis. The equation of the line is :

1. y = 5

2. y + 5 = 0

3. x = 5

4. x + 5 = 0

6x - 5y = 7 is the equation of a line. If x = 2 then the value of y will be :

1. 1

2. -1

3. 5

4. -5