document.write( "Question 717332: If the idea of negative is taken as the opposite of positive, the number line could be used to explain taking away a negative. The idea of negative means change direction. Consider the following:\r \n" );
document.write( "\n" );
document.write( " 4+7-3-(-4)- -7\r \n" );
document.write( "\n" );
document.write( "Starting at zero, proceed from there to the right by 4 units. Now add (go in the same direction) seven more units and end up at 11 on the line. At this point, change directions because of the - sign and go to the left 3 units and end up on the eight on the line. Now continue to go left but wait, the second negative tells you to change directions. Go to the right 4 units and end up on the twelce on the number line. Start to the lefr again but the second negative sign in a row te,ls you to change directions so proceed to the right again but end on the nineteen spot on the number line.\r \n" );
document.write( "\n" );
document.write( "Using a car as an example and the idea of go forward (go straight) and reversd (turn around) write the procedures for the car to follow:\r \n" );
document.write( "\n" );
document.write( "a) -3+4-(-5)+(-7)+2 \n" );
document.write( "________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________\r \n" );
document.write( "\n" );
document.write( "If the car is to return home, state the number that would get it there. \n" );
document.write( "________________________________________________________________________________________________________________________________________________________________\r \n" );
document.write( "\n" );
document.write( "b) 9-(-7)+(+5)-3+(-8)+(-4) \n" );
document.write( "________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________\r \n" );
document.write( "\n" );
document.write( "If the car is to return home, state the number that would get it there. \n" );
document.write( "________________________________________________________________________________ \n" );
document.write( " \n" );
document.write( "
![\"\"](\"/images/stars/stars-13.gif\")
