co-ordinate geometry

co-ordinate geometry

1. formulas

   • midpoint
   • slope
   • distance
   • rise over run
     • run=horizontal
     • rise=vertical
   • equation of a line

2. y=o when line cuts x axis

   • x=o when line cuts y axis

3. parallel and perpendicular lines

   • perpendicular lines if slope multiplied =-1
   • parallel = same

4. point of intersection between two lines

   • graph the lines
   • simultaneous equations

5. graphs

   • x axis
   • y axis
   • 4 quadrants

6. equation of a line

   • sub in x or y values