Question

Question #83568

Answer 1

Using the data provided in the comments, here is a start.

Explanation:

Part 2
A
Lengths in inches.

`{:("Input"," |","Output"),("Forearm"," |","Foot"),("-------------------"," |","------------------"),(17," |",12),(10," |",5),(12," |",6),(10," |",7),(6," |",3):}`

B

I'm unsure about the "select two sets of points".

I think that a point is a pair, like `(17,12)` and to calculate the rate of change, we need two points, not two sets (whatever those are) of points.

I'll use `(17,12)` and `(10,5)` to get a rate of change of

`(5-12)/(10-17) = (-7)/(-7) = 1`

C

The rate of change of foot length with respect to forearm length is `1` `"inch foot length"`/`"inch forearm length"`

Another way of saying this is: The length of the foot and the forearm change at the same rate.

Or: Each inch added to the forearm corresponds to an inch added to the foot.

Part 3

A. (do the arithmetic `0.860(17)+3.302`)

B

No. The data collected includes two points with `x=10` and different values for `y`.

Yes. The equation in part A guves only one value of `y` for each value of `x`. (Never two values for `y`.