Chapter 1 Flashcards
Variable
a symbol and placeholder for an expression or a quantity that varies as an arbitrary or indeterminate object.
What is the variable of this equation
3x+4=2
x
Coordinate Plane
a two-dimensional plane formed by the intersection of a vertical line called the y-axis and a horizontal line called the x-axis
Ordered Pairs
An ordered pair is a pair of numbers, (x,y) , written in a particular order. The ordered pair (x,y) is not the same ordered pair as (y,x)
Like Terms
Terms whose variables (and their exponents such as the 2 in x2) are the same.
Substitute
Putting a number where a letter is
ie. When if x = 5 then 3x+2 becomes 3(5)+2
Algebraic Expression
A mathematical phrase that can include numbers, variables, and operation symbols. Sometimes called variable expressions
Equation
A mathematical sentence that uses an equal sign
Exponent
Tells how many time the base is used as a factor
Base
The repeated factor of a number written in exponential form
Power
The base and exponent combined
Evaluate
To replace a variable with the number given
Coefficient
a numerical or constant quantity placed before and multiplying the variable in an algebraic expression
Constant
A number that has no variable
Reciprocal
Two numbers whose product is 1
