suppose we start with an example
10 > 4 .....true
multiply by 2
20 > 8 ... still true
multiply by -2
-20 > - 8 .... false
how do we make it true???
-20 < -8 ... now true!
Conclusion???
Why does the inequality sign change when both sides are multiplied or divided by a negative number?
2 answers
Multiply by -1 on both sides?