SOLUTION: Can someone please help me with this... Use constant differences or ratios to determine which parent function would best model the given data set. Determine an equation. x ___

Algebra ->  Rational-functions -> SOLUTION: Can someone please help me with this... Use constant differences or ratios to determine which parent function would best model the given data set. Determine an equation. x ___      Log On


   

Question 452124: Can someone please help me with this...
Use constant differences or ratios to determine which parent function would best model the given data set. Determine an equation.
x
_____
6
13
20
27
34
41
y
_____
69.6
52.4
33.2
15
-3.2
-21.4
Thank you!! :)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Use constant differences or ratios to determine which parent function would best model the given data set. Determine an equation.
x
_____
6
13
20
27
34
41
y
_____
69.6
51.4
33.2
15
-3.2
-21.4
---------
Notice that when "x" increases by 7, y decreases by 18.2.
---
So the slope is -18.2/7 = (-13/5)
----
Form: y = mx + b
15 = (-13/5)27 + b
b = 85.2
Equation:
y = (-13/5))x + (426/5)
-----
Notice: I had to change your 2nd y-value entry.
==============
Cheers,
Stan H.
=============