Lesson Notes (Wednesday)

Today, we recapped the method TRIAL & ERROR for factorization and we started on linear inequalities.

Inequalities are basically statements about the size or order of 2 objects, OR about whether they are the same or not.
They will mostly look like this : a < b or a > b
The other stuff is in the notes, and for the FINAL ANSWER of each question about inequalities,
It should look like this :

NOTE: A number line MUST be drawn after the statement. A white circle (empty) shows that the particular object is smaller than the other, while a black circle (filled) shows that the object is either more/less than or equal to the other.

A common mistake most people make is that when

X<2 OR X>4 (theres supposed to be a line under the >)

4 <(plus a line) X < 2
meaning that 2 is bigger than X which is bigger than 4. It's WRONG.

Following X-Code,

if ( C > 0 )
{ ac > bc ;
a/c > b/c;

The C MUST be positive.

Lastly, the FINAL answer MUST be X ONLY. No negative X is allowed.

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