Pre algebra warm up 12/13 & 12/16

Front

What is the identity property of addition?

Back

The identity property of addition states that when you add zero to any number, the result is that number itself. For example, a + 0 = a.

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What is the range of a mapping?

Back

The range of a mapping is the set of all output values (y-values) that result from applying the function to its domain (x-values).

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Back

Front

How do you calculate the total cost including sales tax?

Back

To calculate the total cost including sales tax, multiply the original price by the sales tax rate and then add that amount to the original price. For example, if the total is $35.50 and the sales tax is 4.5%, the total cost is $35.50 + ($35.50 * 0.045) = $37.10.

Front

What is the domain of a relation?

Back

The domain of a relation is the set of all input values (x-values) that can be used in the function.

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What does the term 'variable' mean in algebra?

Back

A variable is a symbol, usually a letter, that represents an unknown value in mathematical expressions and equations.

Front

What is the difference between an expression and an equation?

Back

An expression is a combination of numbers, variables, and operations without an equality sign, while an equation states that two expressions are equal.

Front

What is the purpose of the distributive property?

Back

The distributive property allows you to multiply a single term by two or more terms inside a set of parentheses. For example, a(b + c) = ab + ac.

Front

What is a linear equation?

Back

A linear equation is an equation that makes a straight line when graphed. It has the form y = mx + b, where m is the slope and b is the y-intercept.

Front

What does it mean to solve for a variable?

Back

To solve for a variable means to isolate the variable on one side of the equation to find its value.