Ex 18.1 Distance formula
Ex 18.2 Midpoint
Ex 18.3Ā Slope from 2 points
Ex 18.4 Equation of a line
Ex 18.5 y=mx+c
Ex 18.6 Finding the equation of a lineĀ
Ex 18.7 Drawing a line
Ex 18.8 perpendicular and parallel lines
Ex 18.9 Area of a triangle
Ch 18 Revision exercise