Algebra 1a: Chapter 4, Lesson 2, page 175.
The Addition Property of Inequalities
Don’t forget, the equations:
- if `a<b`, then `a+c<b+c`
- if `a>b`, then `a+c>b+c`
and similar statements are true for ≤ and ≥
For inequality of one step, follow the EXACT same steps as equalities. The only things we have to remember when graphing on a number line:
- For the symbols `≤` and` ≥`, the circle must be CLOSED because we INCLUDE the data point
- For the symbols `<` and `>`, the circle must be OPEN because we get as close as possible to the data point but it is NOT INCLUDED!
Here is a link from PURPLEMATH.com with some more examples!
Two of tonight’s homework problems for Chapter 4-2 are solved by MrE are here! Just click it!