Expressions, Equations, and Ineqaulities

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 a variable?

Back

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

Front

What is the solution to the equation 0.8a = 64?

Back

a = 80.

Front

How do you isolate a variable in an equation?

Back

To isolate a variable, you perform inverse operations to get the variable alone on one side of the equation.

Front

What does the inequality -12x > 36 mean?

Back

It means that when -12 is multiplied by x, the result is greater than 36.

Front

What is the solution to the inequality -12x > 36?

Back

x < -3.

Front

What is the solution to the equation 0 = 8z + 8?

Back

z = -1.