Review - Expressions, Equations, and Inequalities DCA #3 ~ ADV

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

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions and shows that one is greater than, less than, or not equal to the other.

Front

What does it mean to solve an equation?

Back

To solve an equation means to find the value(s) of the variable(s) that make the equation true.

Front

What is the solution to the equation 2x + 12 = -50?

Back

x = -31.

Front

How do you isolate a variable in an equation?

Back

To isolate a variable, you perform inverse operations to both sides of the equation until the variable is alone on one side.

Front

What is the equivalent expression for 90 ÷ 5?

Back

Front

What does the symbol '>' mean in an inequality?

Back

The symbol '>' means 'greater than'.

Front

What is the solution to the inequality 9x > 63?

Back

A possible value for x is 8.

Front

How do you write an equation for a word problem?

Back

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