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Algebra I

About Course

Algebra I is the second math course in high school and will guide you through among other things expressions, systems of equations, functions, real numbers, inequalities, exponents, polynomials, radical and rational expressions. The Algebra I course, often taught in the 9th grade, covers Linear equations, inequalities, functions, and graphs; Systems of equations and inequalities; ... This is the property of khanacademy.org and is available for free on their website.

Topics for this course

388 Lessons

Algebra foundations

Overview and history of algebra
Origins of algebra
Abstract-ness
The beauty of algebra
Intro to the coordinate plane
Why all the letters in algebra?
What is a variable?
Introduction to variables
Why aren’t we using the multiplication sign?
Evaluating an expression with one variable
Substitution and evaluating expressions
Evaluating expressions with two variables
Evaluating expressions with two variables: fractions & decimals
Combining like terms
Intro to combining like terms
Simplifying expressions
Combining like terms challenge problem
Simplifying expressions with rational numbers
Introduction to equivalent expressions
Equivalent expressions
Division by zero
Why dividing by zero is undefined
The problem with dividing zero by zero
Undefined & indeterminate expressions

Solving equations & inequalities

Working with units

Linear equations & graphs

Forms of linear equations

Systems of equations

Inequalities (systems & graphs)

Functions

Sequences

Absolute value & piecewise functions

Exponents & radicals

Exponential growth & decay

Quadratics: Multiplying & factoring

About the instructors

4.33 (24 ratings)

56 Courses

296 students

Free

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