By plotting the points A(3, 0), B(6, 1.5), C(9, 3) and D(-3, -3), prove that they all lie in a straight line.

Plot Q(-1, -5) on graph paper.

Find the perpendicular distance of point P(1, -3) from the y-axis.

The following line graph shows the yearly sales figures for a manufacturing company.

A. What were the sales in (i) 2002 (ii) 2006?

B. What were the sales in (i) 2003 (ii) 2005?

C. Compute the difference between the sales in 2002 and 2006.

D. In which year was there the greatest difference between the sales as comparedto its previous year?

Draw the line passing through (2, 3) and (3, 2). Find the coordinates of the points at which this line meets the x-axis and y-axis.