Question 4283
When you multiply or divide both sides of an inequality by a negative number, you must reverse the direction of the inequality.  For example, we all agree that 


-5 < 12


However, if you multiply both sides of this inequality by -1 you get
(-1)*(-5) compared with (-1)*12
5 compared with -12. 


Do you see that what was negative on the left side became positive, and what was positive on the right side became negative.  That's an example of what always happens.  It always changes the direction of the inequality, so now if:


-5 < 12

5 > -12.


R^2 at SCC