Algebraic Vocabulary Flashcards

All 6 cards in this deck

What is an expression?

A collection of terms with no equals sign, e.g. $3x + 2$.

What is a formula?

A rule linking two or more variables, written with an equals sign, e.g. $A = lw$.

What is an identity, and which symbol is used for one?

A statement true for all values of the variable, written with $\equiv$, e.g. $2(x+3) \equiv 2x + 6$.

True or false? $2x + 1 \le 7$ is an equation.

False. It is an inequality; an equation has an equals sign.

What are the terms in the expression $4x^2 - 7x + 3$?

$4x^2$, $-7x$ and $3$ — the parts separated by $+$ or $-$.

What is meant by the coefficient of a term?

e.g. the term $-7x$

The number multiplying the letter(s), including its sign: $-7$.