SOLUTION: solve the inequality. give the result in set notation and graph it 4<-z-4<11
would appreciate some kindly heplp
Algebra ->
Inequalities
-> SOLUTION: solve the inequality. give the result in set notation and graph it 4<-z-4<11
would appreciate some kindly heplp
Log On
We need to get "z" by itself in the middle of the compound inequality. So at some point we will need to multiply the whole inequality by -1, which means the direction of the inequality changes.
In this case we can do either of two things first: multiply by -1, or get rid of the "-4" in the middle. Let's do it both ways, for practice, and to see that we get the same answer.
multiply by -1; change the direction of the inequality rewrite the inequality in standard form -- with the lower bound on the left and the upper bound on the right subtract 4 to get z by itself
OR...
add 4 to get "-z" by itself in the middle multiply by -1 to get z in the middle rewrite in standard form
You can put the result in set notation and draw the graph yourself....
