Which of the following best defines a function? (4 points)

a function is a special type of relation for which there is a rule that pairs each input with exactly one output.

a function is a relationship that defines the connection between two variables.

a function is a set of ordered pairs in which no y-value repeats.

a function pairs input and output values with no particular pattern.

A function is a special type of relation for which there is a rule that pairs each input with exactly one output.

a proportinal relationsip

Step-by-step explanation:

o= 4(i) +3

step-by-step explanation:

o is your output value and i is your input value. so, for example, if we stuck 7 in as our input, we would first multiply by 4 ( pemdas ), which equals 28. then we would add 3 to 28, for a total output of 31. this may not be a graph, but, it is a way to solve your formula..

b. astronomers