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Front

What is a variable in an equation?

Back

A symbol, often represented by a letter, that stands for an unknown value in an equation.

Front

Define 'equation'.

Back

A mathematical statement that asserts the equality of two expressions, typically containing one or more variables.

Front

What does it mean to solve an equation?

Back

To find the value(s) of the variable(s) that make the equation true.

Front

What is the purpose of defining a variable in a word problem?

Back

To represent an unknown quantity that can be solved for using the information given in the problem.

Front

Write an equation for the total cost of items purchased if you know the cost of each item and the quantity bought.

Back

Total Cost = (Cost per Item) x (Quantity) + Fixed Costs (if any).

Front

How do you isolate a variable in an equation?

Back

By performing inverse operations to both sides of the equation until the variable is alone on one side.

Front

What is a linear equation?

Back

An equation that makes a straight line when graphed, typically in the form y = mx + b.

Front

What does 'x' represent in the equation y = 2x + 3?

Back

'x' is the independent variable, which can take any value, and affects the value of 'y'.

Front

If Bonnie's weekly allowance is represented by 'n', what does the equation n/2 + 4 = 12 represent?

Back

It represents that half of Bonnie's allowance plus the $4 she earned equals $12.

Front

In the equation 7n + 10 = 24, what does 'n' represent?

Back

'n' represents the cost of one pencil.