Which expression is equivalent to (f + g)(4)?
2 answers:
Answer:
Step-by-step explanation:
For any functions f and g on x , the sum of functions is equivalent to
OR
Thus, for x=4 we have
The expression is equivalent to
f(4) and g(4) means that we should find the value of our function when x equals 4.
(f+g)(4) means we should find the value of our function as sum, when x equals 4.
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Answer:
{
}
{
}
The relation is not a function.
Step-by-step explanation:
By definition, a relation is a function if each input value has only one output value.
Given the relation:
(4,23)
(3,-2)
(-6,5)
(4,6)
The domain is the set of the x-coordinates of each ordered pair (You do not need to write 4 twice):
{
}
The range is the set of the y-coordinates of each ordered pair :
{
}
Since the input value 4 has two different output values (23 and 6), the relation is not a function.