This week in precalculus 11, we learned about graphing linear inequalities.
This is what we learn:
If the inequality was greater than or equal to y:
, then you also need to shade the line.
Same goes for an inequality which is less than or equal to y.
However if it is only greater than or only lower than, then you must leave a dotted line to inform that the line does not count as part of the answer.
Thank you for reading!