Algebra Vocabulary for Grade 9

symbol (like $$x$$ or $$y$$ ) representing an unknown value

number multiplying a variable (e.g., $$3$$ in $$3x$$ )

fixed value without variables (e.g., $$5$$ in $$x + 5$$ )

combination of variables, numbers, and operations (e.g., $$2x + 7$$ )

statement showing two expressions are equal (e.g., $$x + 2 = 5$$ )

single part of an expression, separated by $$+$$ or $$-$$ (e.g., $$4x$$ , $$-7$$ )

with the same variable(s) and exponent(s) (e.g., $$2x$$ and $$5x$$ )

of variable(s) that make an equation true

statement comparing two expressions using $$<$$ , $$>$$ , $$\leq$$ , or $$\geq$$

expression with multiple terms, variables with non-negative integer exponents (e.g., $$x^2 + 3x + 2$$ )