Elementary algebra 1

This book is about the introduction of the elementary algebra. I will update more topics in the future if possible. 


Chapter 1

Solve one variable linear equation and inequality  

1. Addition and multiplication property of equality, solve one variable linear equation.
2. Solve formula, ratio, proportion, and cross multiplication.
3. Solve linear inequality. 
4. Set operations and compound inequalities.  



Chapter 2

Two variables linear functions relationship

5. Rectangular coordinate system, graph linear function

6. Slope intercept and the point slope formula
7. Relationships of two variables linear functions: parallel and perpendicular



Chapter 3

Exponents and the polynomial  

8. Exponent operations and scientific notation.
9. Polynomial operations
10. Polynomial division 



Chapter 4

Two variables system, absolute value equation and inequality, application problems 

11. Solve two variables linear system
12. Use substitution and elimination methods to solve two variables linear system.
13. Absolute value equations and inequalities
14. Linear inequalities and the inequality system
15. Application problems