Consider the following population and year graph:

Find the slope of the line AB and using it, find what will be the population in the year 2010.

If three points A(h, 0), P(a, b) and B(0, k) lie on a line, show that:

The slope of a line is double of the slope of another line. If tangents of the angle between them is , find the slopes of the other line.

Without using the distance formula, show that points (– 2, – 1), (4, 0), (3, 3) and (– 3, 2) are the vertices of a parallelogram.

Find the angle between the X - axis and the line joining the points (3, – 1) and (4, – 2).