expressions equations review

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value.

Front

What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions, typically containing an equal sign (=).

Front

How do you solve for a variable in an equation?

Back

To solve for a variable, isolate the variable on one side of the equation using inverse operations.

Front

What does it mean to simplify an expression?

Back

Simplifying an expression means to reduce it to its simplest form by combining like terms and performing operations.

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change, represented by a number.

Front

What is a variable in an expression?

Back

A variable is a symbol (usually a letter) that represents an unknown value in an expression or equation.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equal sign and represents a value, while an equation states that two expressions are equal.

Front

How do you model a word problem with an equation?

Back

Identify the quantities involved, assign variables, and translate the relationships into an equation.

Front

What is the dependent variable in a graph?

Back

The dependent variable is the outcome or response that depends on the independent variable, typically plotted on the y-axis.

Front

What is the independent variable in a graph?

Back

The independent variable is the variable that is manipulated or changed, typically plotted on the x-axis.