Question

Input (x): 0, 1, 2, 4
Output (y): 4, 3, 2, 0

Write a rule for this function..

Thank you:
Note: i have a feeling that the answer is "there is no rule because it is not a function" but just making sure. thanks

Answer 1

what makes u think its not a function?

Answer 2

`A function correlates with each element of a set with only one element of another set.`

Since there is one y-value for every of x this is a function.

Answer 3

I don't know, I didn't quite understand this part of algebra, but i really would like to know the rule for this function, i usually do very well in math, this is the last question i have in math

Answer 4

To find the function rule we can determine the slope of two points.

\(\huge\bf{\frac{rise}{run} \rightarrow \frac{y_{2}-y_{1}}{x_{2}-x_{1}} \rightarrow \frac{3-4}{1-0}=-1}\)

We are also given at when the line passes through the y-axis which is `4` so the y-intercept is `4`.

So the function rule is.

\(\huge\bf{y=-x+4}\)

Answer 5

@julierosehead

Answer 6

thank you so much!!

Answer 7

No problem :)