Why do rivers meander instead of traveling in a straight line?

Used in just about any industry, inequalities, like equations, are fundamental building blocks of algebra.

In this Investigation we explore linear inequalities in one variable.

In this Investigation we look at linear inequalities in two variables.

Ever since the mathematics of the Babylonians, equations have played a central role in the development of algebra.

In this Investigation we get a historical overview of equations.

In this Investigation we solve linear and quadratic equations.

In this video learn the mechanics of solving one-step equations involving addition. .

In this video learn the mechanics of solving one-step equations involving addition. .

In this video learn the mechanics of solving one-step equations involving division. .

In this video learn the mechanics of solving one-step equations involving multiplication. .

In this video learn the mechanics of solving one-step equations involving subtraction. .

In this video learn the mechanics of solving one-step equations involving subtraction. .

Video Tutorial: Integers: Variable Expressions with Integers.

In this TI Nspire tutorial, the Graph window is used to graph a linear inequality. This video supports the TI-Nspire Clickpad and Touchpad.

In this TI Nspire tutorial, the Graph window is used to graph a linear inequality in slope-intercept form using sliders.

Video Tutorial: One-Step Equations: Addition. In this video, get an overview of one-step equations and how to solve them.

Video Tutorial: One-Step Equations: Division. In this video, students get an overview of one-step equations and how to solve them.

Video Tutorial: One-Step Equations: Multiplication. In this video, students get an overview of one-step equations and how to solve them.

Video Tutorial: One-Step Equations: Subtraction. In this video, students get an overview of one-step equations and how to solve them.

In this video segment, get an overview of variables and equations, along with the evolution of algebraic notation.

In this TI Nspire tutorial for the TI-Nspire CAS, the Graph Window is used to graph quadratic inequalities.