Question

In 2000, 51% of the residents in a large city regularly used newspapers for getting news and this has decreased at an average rate of approximately 1.7% per year since then. Find a linear function in slope-intercept form that models this description. The function should model the percentage of residents. P(x) who regularly used the news outlet x years after 2000.
P(x)=

Answer 1

yes

Answer 2

no whats regression?

Answer 3

ti83

Answer 4

but i dont know how to use the graping part

Answer 5

k

Answer 6

Lol. Ignore everything I said before.

Answer 7

ok

Answer 8

Okay. The rate is decreasing right? You know that. So the slope must be negative.

Answer 9

ok yes but what is the slop

Answer 10

It would be -1.7

Answer 11

Because it's decreasing at a rate of 1.7% every year after 2000.

Answer 12

ok

Answer 13

x would be the number of years after 2000.

Answer 14

The y-intercept should be 51 because that was the % of people at year 2000. It started to decrease since then.

Answer 15

So P(x)=-1.7x+51

Answer 16

so y=mx+b or y=mx-b

Answer 17

+b because the y intercept was a positive number at 2000.

Answer 18

thank you

Answer 19

In other words it was +54 and it has been decreasing since then.

Answer 20

Welcome :) .

Answer 21

so now what?

Answer 22

You are done. It asked you to find a linear function which we solved for.

Answer 23

P(x) =-1.7x+51

Answer 24

All of this is in % .

Answer 25

oh thank you!

Answer 26

so -1.7%x+51%