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Chapter 1: Problem 9

Classify each of the following as either an expression or an equation. $$ 2 x-3 y=8 $$

Short Answer

Expert verified
Equation.

Step by step solution

01

Identify the Components

Look at the given mathematical statement: \[2x - 3y = 8\].Check if it involves an equality sign (equals sign).
02

Determine Classification

An equation contains an equals sign, indicating that two expressions are equal. An expression does not have an equals sign.Since \[2x - 3y = 8\] has an equals sign, it is an equation.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

mathematical expressions
When learning math, it's crucial to understand *expressions*. These are combinations of numbers, variables, and operators (like +, -, *, /) that represent a value. Unlike equations, expressions don't have an equality sign (=). For example, \(2x - 3y\) or \(5 + 6\) are expressions. They show a relationship but do not state that something is equal to something else.
So, remember, if you do not see an equality sign, you鈥檙e dealing with a mathematical expression.
mathematical equations
Equations express equality between two mathematical expressions. Key to identifying an equation is spotting the equality sign (=). For example, \(2x - 3y = 8\) is an equation.
It states that the expression \(2x - 3y\) is equal to 8. This equality sign acts like a balance point, indicating that whatever is on the left-hand side is equal in value to what鈥檚 on the right.
When classifying, if you see an equality sign, you should immediately recognize it as an equation.
equality sign
The equality sign (=) is critical in distinguishing between equations and expressions. It asserts that two quantities are identical in value. An example can be seen in the equation \(2x - 3y = 8\).
Here, the equality sign tells us that the left side, \(2x - 3y\), is equal to the right side, 8. Without this sign, you don't have an equation. Instead, you merely have expressions. Understanding the role of this sign will help you quickly identify equations in your studies.

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Most popular questions from this chapter

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