# Vocabulary Flashcards

What is a term?

Single number, variable, or a number times a variable.

What is a coefficient?

Give an example

A number next to a variable

2a - the “2” is the coefficient

What is a constant

A number by itself

5x + 7

“7” is the constant

An algebraic expression is 1or more terms separated by _________ symbol(s)

+ or -

When combining like terms, we add the variables together as well as the coefficients.

Exp. 3x + 2x = 5x²

True or False

False

When adding or subtracting (Combining) like terms, the variable stays the same.

2x + 3x = 5x

An equation is a statement that 2 algebraic expressions are equal.

True or false

True

An equation always includes an “=” symbol

True or False

True

3x - 4

3x - 4 = 12

Algebraic Expression or Algebraic Equation

Expression

Equation

2x = 8

Algebraic Expression or Algebraic Equation

Equation

Equality test for fractions

What is it used for

How do we preform it

Cross multiply

1 2

- -

4 8

Is this a proportion

Yes

Which is the numerator and which is the denominator

1 ---- 2

Numerator = 1 (top number)

Denominator = 2 (Bottom number)

Proper / Improper Fraction

Mixed number.

Proper: Numerator > Denominator 1/2

Improper: Denominator > Numerator

4/2

Mixed number 2 1/2

Whole numbers, rational numbers, and irrational numbers are all this type of number

Real

5i the square of -25 is this type of number

Imaginary number