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evaluate

To find the numerical value of an expression.

solution

A value for the variable that makes an equation true.

For x + 17 = 19, the value is 12

For x + 17 = 19, the value is 12

relation

A set of ordered pairs.

algebraic expression

An expressions that contains sums and/or products of variables and numbers.

ordered pair

A pair of numbers used to locate any point on a coordinate plane.

variable

A placeholder for any value.

counterexample

An example that shows a conjecture is not true.

equation

A mathematical sentence that contains an equal sign (=).

origin

The point at which the number lines intersect in a coordinate system.