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
