Question

Can anyone help me answer these questions? I just really suck at inequalities and don't know how to answer these. Please help?
1.Explain why and when you need to switch the inequality sign when solving an inequality.
2.How can you tell which direction to shade the graph of an inequality?
3.What is the difference between graphing conjunctions and disjunctions?
4.What is one difference between an inequality with one variable and one with two variables?
5.How do “closed and open circles” relate to “dashed and solid lines”?

Answer 1

I'm not going to do all 5. I'm only doing one.

Answer 2

That's fine. I'll take all the help I can get.

Answer 3

Alright, next time, post one question at at time, not five in a question.

Answer 4

Let's say we have:
\[-a>b\]If we rearrange the equation we get:
\[0>b-a\]And if we rearrange again we get:\[-b>a\] or \[a<-b\]So, when do swap the inequality? Do you know?

Answer 5

when it's only a negative

Answer 6

??

Answer 7

Negative and when we are multiplying and dividing. This is something you just have to memorize.

Answer 8

thank you

Answer 9

open circle means the number is not include and dashed line means the numbers on the line are not included
solid circle means the number is included and solid line means the numbers are included