1. Find the equation of the straight line that has slope m = 4 and passes through the point (–1, –6).
2. Find the equation of the line that passes through the points (–2, 4) and (1, 2).
3. Given the line 2x – 3y = 9 and the point (4, –1), find lines through the point that are:
a) parallel to the given line and
b) perpendicular to it.