× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
g
3
2
J
2
p
2
m
2
h
2
s
2
r
2
d
2
l
2
a
2
s
2
Home Q & A Board Science-Related Homework Help Mathematics
New Topic  
treetreee treetreee
wrote...
Posts: 374
Rep: 0 0
2 years ago
When solving inequalities with greater or equal to sign, what happens when you divide by a negative?

Say you have:

\(-x\le 12\)

I realize you divide by \(-1\) to solve for \(x\), but if I do, does the sign change to \(x>-12\) or \(x\ge -12\)?
Read 177 times
1 Reply

Related Topics

Replies
wrote...
#1
Educator
2 years ago
Whether you divide OR multiply by a negative number, the sign changes. When you switch the sign, you keep the negative. Therefore, the following is correct:

\(−x\le 12\)

\(x\ge -12\)
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  796 People Browsing
 127 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 319
  
 1209
  
 609
Your Opinion
Who's your favorite biologist?
Votes: 586
Previous poll results: How often do you eat-out per week?