Real numbers
What are natural numbers?
The positive integers (whole numbers)
Define the commutative property
you can flip flop the order of the numbers in the problem and it will not affect the answer.
|-25| + |5|
Equal to -20?
NO, Absolute value turns things positive.
25 + 5 = 30
What are these called? ( ), [ ]?
Interval notation.
What is domain?
X value
Natural numbers do not include what number?
0
Define associative property
The grouping does not matter.
|-12 - 5|
Equal to 17? Explain.
Yes, -12 -5 = -17 but the ABSOLUTE VALUE makes it positive 17.
What does ( mean ?
Means not included or open.
On a graph, starting or ending will be an Open circle O
What is Range?
Y value
Is π rational or irrational?
Irrational
Define identity property
Any number plus zero keeps its identity.
|-2| + |-1|
Equal to 3?
Yes, |-2| + |-1| to positive, 2 + 1 = 3!
What does [ mean?
Included or closed.
On a graph, starting or ending will be a closed circle.
What is mapping?
Shows how each element of domain is pair w/ range.
Which set of real numbers starts with 0
Whole numbers
Define the Inverse property.
Using opposite to cancel value.
Are 8 + |1+1| and 8 + |1 - 3| equal to TEN?
Yes,
8 + |2| = 10
8 + |-2| = 8 + 2 = 10
X < 3 in interval notation
(-infinity, 3)
Define Function.
An x and y are paired. In a relation and X's do not repeat.
√2,√3,π are examples of which real number set?
Irrational numbers
Define and give an example of the zero property.
Anything multiplied by zero = zero.
0 x 7(anything) = 0
How do you define the order of operations
PEMDAS
X ≥ 5 in interval notation.
[5, ∞)
If a vertical line intersects a graph more than once, then it is not a _____.
Function.