The relation which is a function is; Choice A;<em> {(6, −4), (5, 8), (−3, 6), (−4, −4)}</em>
<h3>What is a function?</h3>
In mathematics, a function from a set of values for variable x to a set of values for variable y assigns to each element of x only one element of y. The set X is called the domain of the function and the set Y is called the codomain of the function.
On this note, since in Choice A, each x-value is mapped distinctively to one value of y, Choice A is a function.
Read more on functions;
brainly.com/question/10439235
P= 2πr
d= 2ft
P= 2×3.14
P= 6.28
1km= 3,280ft / 2km= 6560ft
6560÷6.28=1044.58 revolutions
Percent sold=sold/original times 100
sold=816
original=850
percent sold=816/850 times 100
percent sold=0.96 times 100
percent sold=96%
Ok so I’m not completely sure but I think its B. Let me explain.
The thing starts at 0 and goes up to 3 it then goes down to -2.5 which is 3-5.5 it then goes up to -1 which makes the whole thing 3-5.5+1.5
Hope this helps some.
Answer:
Alternate interior