SOLUTION: How to know if the algebra expression is positive or negative? How use the number line to joing it? for example a + b how to know where of this its positive or negative.

Algebra ->  Number-Line -> SOLUTION: How to know if the algebra expression is positive or negative? How use the number line to joing it? for example a + b how to know where of this its positive or negative.      Log On


   

Question 339888: How to know if the algebra expression is positive or negative? How use the number line to joing it? for example a + b how to know where of this its positive or negative.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
You don't know without knowing the values of a and b.