Unit 3 Review (PA)

Front

Back

80

Front

Back

25

Front

What does it mean if an equation has infinite solutions?

Back

It means that any value of the variable satisfies the equation.

Front

Back

3

Front

Back

x ≥ -10

Front

Define 'equation'.

Back

An equation is a mathematical statement that asserts the equality of two expressions.

Front

What is the difference between an equation and an inequality?

Back

An equation states that two expressions are equal, while an inequality shows that one expression is greater than or less than another.

Front

What does it mean to check your solution in an equation?

Back

It means substituting your solution back into the original equation to verify that both sides are equal.

Front

What is a variable in mathematics?

Back

A variable is a symbol used to represent an unknown value in an equation or expression.

Front

Back

Subtract 3 from both sides to isolate the term with the variable.