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T-Charts in Math: Examples & Problems Video

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  • 0:02 What Is a T-Chart?
  • 0:32 An Example Using a T-Chart
  • 1:49 T-Charts and Word Problems
  • 3:45 Lesson Summary
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Lesson Transcript
Instructor: Ellen Manchester
T-charts are great organizational tools to help solve equations with more than one variable. Whenever you have equations with unknowns, you can use a T-chart to organize and solve a problem.

What Is a T-Chart?

A T-chart is an organizational tool to help solve equations. This is one way to help solve equations with variables, which are any unknowns in an equation or formula. A T-chart can be set up like this:

T-Chart

Each side represents a variable, or unknown. The left one we call the independent variable, since it does not matter which real number we choose. The right side we call the dependent variable, since it depends on what we choose for the independent variable.

Let's look at an example.

An Example Using a T-Chart

Given the equation y = 2x + 3, we can use the T-chart to organize our information. Let's say we randomly select 0, 1, 2, -1, -2 and 3 as the values for x. We'll write those numbers in the left side of our T-chart, and then one at a time, plug them into our equation. This will allow us to solve for y, and we'll write our resulting y values in the right side of the chart so it looks like this:

T-Chart Example 1

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