A. MATH CHAP 6: further coord. geometry completed:

A. MATH CHAP 6: further coord. geometry completed:

1. 6.1: EQUATION OF A CIRCLE:

   • STANDARD FORM:
     • [ (x - a)^2 + ( y - b ) ^2 ] = r^2
   • 2 factors to find eq of circle
     • 1) centre of circle
     • 2) radius of circle
   • general form:
     • [ (x^2) + (y^2) + (2gx) + (2fy) + (c) ] =0
       • such that ( -g , -f) is the COORDINATE OF THE CENTRE
       • sq root [ (g^2) + (f^2) -c ] = radius

2. 6.2: GRAPHS OF Y^2 = KX

3. 6.3.: GRAPHS OF POWER FUNCTIONS:

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