How do you graph the system of linear inequalities #x<5# and #x> -4#?
2 Answers
This inequality is read "X is less than 5 and X is greater than -4".
What this means is that we want to include every number between -4 and 5, but not -4 and 5 themselves. We can do this by drawing open circles at the points -4 and 5, and then connecting those two circles with a line.
This is the system of inequalities graphed on a number line:
Firstly, we are looking for the region where
graph{(x-5)<0 [-10, 10, -5, 5]}
Secondly, we are looking for the region where
graph{x>(-4) [-10, 10, -5, 5]}
If we want to simultaneously satisfy both inequalities then we require the union of these two regions, which is as follows:
graph{(x-5)(x+4)<0 [-10, 10, -5, 5]}