We've learnt how to solve equations involving
inequalities. It is very similar to solving a normal equation but remember, if you multiply or divide by a negative number you must change the direction of the inequality sign. We have also learnt how to represent inequalities on both number lines and graphs. Here’s a summary of what we’ve done in class.
To represent an inequality on a graph, you need to be good
at plotting straight lines. Here’s some
revision of this topic.
Once you’ve plotted the straight line, you
need to figure out what side of it to shade. Do this using the coordinate method
we discussed in class. Normally we shade just outside the area required.
