Answer:
A. {(5, –4), (–4, 5), (–5, 4), (4, –5)}
Step-by-step explanation:
Since there is one value of
y
for every value of
x
in
(
5
,
−
4
)
,
(
−
4
,
5
)
,
(
−
5
,
4
)
,
(
4
,
−
5
)
, this relation is a function.
The relation is a function.
Answer: yes that is a function
Step-by-step explanation:
It is a function because every y value has a unique x value
This is how it would look on a graph.
To calculate expected value,
We can add up the probability of all possible events.
The 2 possible events are either winning $50 or losing the prize, which is $ - 50
Expected value =
50 x 40 % + (-50) x 60%
= $-10
So the answer is $-10
