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Assignment 10
Solve:
Solution
We draw three number lines: one for the numerator, the second one for the denominator and the third one for the quotient. The first line shows that 
is equal to 
for 
, positive 
for 
and negative 
for 
.
----------------- (+1) ++++ x-1
----- (-1) +++++++++++ x+1
+++ (-1) ----- (+1) ++++ quotiënt
From this we can determine the sign of the quotient of both linear functions because:
- / - = +
+ / + = +
+ / - = -
- / - = +
and find:
or 
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