# Algebra I

**Description**

Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It’s also seen as a “gatekeeper” subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it’s impossible to move forward. It’s used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we’ll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.

#### Subsections

- Systems of linear equations
- Absolute value equations, functions, and inequalities
- Units of measurement in modeling
- Sequences
- Functions
- One-variable linear equations
- Rational and irrational numbers
- Two-variable linear equations
- Linear equations and functions word problems
- Two-variable linear inequalities
- Quadratic equations and functions
- One-variable linear inequalities
- Introduction to exponential functions
- Introduction to algebra
- Introduction to polynomials
- Seeing structure in expressions
- Expressions with rational exponents and radicals
- Polynomial factorization