Coordinate Geometry

Coordinate Geometry

1. Coordinate System

   • (I) Quadrant (+,+) (II) Quadrant (-,+) (III) Quadrant (-,-) (IV) Quadrant (+,-)

2. Cartesian System

   • Two Perpendicular Lines
     • x-axis
       • Abscissa
     • y-axis
       • Ordinate
   • Meaning
     • To describe the position of point in a plane
   • Fixed Point
     • Point where x and y axis intersect

3. Quadrants

   • Plane divided into 4 parts by co-ordinate axes

4. Graph-linear Equation

   • STEP 1:Convert given equation in the form y=mx+c
     • STEP 2:Select atleast 3 values of x such that xy=1
       • STEP 3:Draw table for the ordered pair (x,y)
         • STEP 4:Plot these ordered points on the graph paper
           • STEP 5:Draw straight line passing through plotted points

5. Plotting point in a plane (5,4)

   • STEP 1:Draw co-ordinate axis and select units
     • STEP 2:Starting from origin count units on x and y axis
       • STEP 3:Mark the corresponding points