Python function which finds coordinates of mirror image . This function return a pair of double
def mirrorImage ( a , b , c , x1 , y1 ) : NEW_LINE INDENT temp = - 2 * ( a * x1 + b * y1 + c ) / ( a * a + b * b ) NEW_LINE x = temp * a + x1 NEW_LINE y = temp * b + y1 NEW_LINE return ( x , y ) NEW_LINE DEDENT