Answer:
[tex]\boxed {\tt True}[/tex]
Step-by-step explanation:
This is true. Whenever you divide or multiply an inequality by a negative number, you must flip the inequality sign.
Here is an example:
[tex]-9x>27[/tex]
We have to divide both sides of the inequality by -9. Since it is a negative number, flip the inequality sign.
[tex]\frac{-9x}{-9} <\frac{27}{-9}[/tex]
[tex]x<\frac{27}{-9}[/tex]
[tex]x<-3[/tex]
So, it is true that you must flip the inequality sign when multiplying or dividing by a negative number.
