COORDINATE GEOMETRY

COORDINATE GEOMETRY

1. 1.1 Distance and Midpoint

   • Distance
     • always positive
   • Midpoint
     • write in coordinate and do not forget bracket : (x,y)

2. 1.2 Gradient and Equation of straight line

   • Gradient
     • gradient is undefined
     • gradient is positive
     • gradient is zero
     • gradient is negative
   • Equation of straight line given a gradient and a point
     • use one point only
   • Equation of straight line passing through two points
   • Type of straight line equation
     • Intercept form
       • a is x-intercept, b is y-intercept
     • Gradient form
     • General form

3. 1.3 Parallel and Perpendicular lines

   • Parallel line
   • Perpendicular line

4. 1.4 Intersection line

   • to determine the POINT of intersection

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