Answer:
all work is shown and pictured
9514 1404 393
Answer:
all are functions except Relation 2
Step-by-step explanation:
If any input value (first of an ordered pair) is used more than once, the relation is not a function. Output values can be used as often as you like.
Only Relation 2 is not a function.
The answer is 129 because the opposite corners of a quadrilateral has to equal 180°
(a-b)(2a+4b) = 2a² - 2ab + 4ab - 4b² = 2a² + 2ab - 4b²
Answer: The empty set
The empty set is a subset for every set.
