A community for students.
Here's the question you clicked on:
 0 viewing
brandibear
 3 years ago
Can someone dumb down how to solve system of inequalities?
brandibear
 3 years ago
Can someone dumb down how to solve system of inequalities?

This Question is Closed

amorfide
 3 years ago
Best ResponseYou've already chosen the best response.1> greater than < less than ≥ greater than or equal to ≤ less than or equal to okay so now you know the signs let's say we have an inequality x>4 this means x is greater than 4 by this we mean, all values of x must be above 4 so x can be 4.1, 4.2, 4.3, 4.4, 5, 6, 7, 8, all the way to infinite x<4 this means x is less than 4 all x values must be below 4 3, 2, 1,0,1,2,3 all the way to negative infinite x≤4 this means x is less than or equal to 4 so your x values are equal to 4 or below your x values can be 4,3,2,1,0,1 all the way to negative infinite x≥4 this means x is greater than or equal to 4 x values can be 4,5,6,7,8,9, all the way to infinte so let's say we have x+4>7 to solve this we want x to be the subject, so we want x on its own to do this we move all constants to the opposite side so we have x+4>7 we have a positive 4, so we need to add a negative 4 onto both sides x+44>74 x+0>3 x>3 your solutions would be any value greater than 3 if you have 3x+5>8 you want to make x the subject, so move all constants to the other side 3x+5>8 we want to do the opposite to +5 so 5 3x+55>85 3x+0>3 3x>3 now we have 3 lots of x, we want x on its own... since we have 3x this is 3 multiplied by x so we do the opposite which is divide, so we divide by 3 3x/3 >3/3 x>1 our solutions are all x values greater than 1 i will go through simultaneous equations later, gotta go
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.