How do you solve and graph the compound inequality #4 < n + 6 < 9# ?
Subtract 6 from each part of the inequality:
Make two equations:
Graph these two lines. This we give you the boundary between included and excluded regions. Remember to use a dotted line as these are of the for < , > and not of the form
With these plotted, we have three regions A , B and C, we now test coordinates in each region to see which is an included or excluded region.
The only region where both conditions are met is region B. Shade region B