Question

amount of money Cathy has in her money box as a function of time:


Time
(month)
x
Money
($)
y
0
400
1
320
2
240
3
160


Part A: What is the y-intercept of the function, and what does this tell you about the table? (4 points)

Part B: What is the average rate of change of the function represented by the table between x = 1 to x = 3 months, and what does the average rate represent? (4 points)

Part C: What is the domain of the function represented by the table if Cathy does not put any money into the box but takes out the same amount of money from the box each mon

Answer 1

@Godlovesme

Answer 2

what's the value of y when x was 0?

Answer 3

1

Answer 4

can u take a pic of the table or make an ordered pair like (x.y) ?

Answer 5

the x values are 0 1 2 3

Answer 6

the ys are 400 320 240 160

Answer 7

like that?

Answer 8

@123333333333333333333

Answer 9

yes

Answer 10

so the value of y when x is 0 is 400 that's a y-intercept that means she already/originally had $400

Answer 11

so is that part a

Answer 12

yep for part b its basically asking u for slope \[m=y2-y1/x2-x1\]
can u try

Answer 13

hint

Answer 14

http://openstudy.com/study#/updates/533efdc1e4b02f8a3bd4d1d5
check this link out and tag me if u don't understand :)

Answer 15

@123333333333333333333

Answer 16

yes i looked at i just dont get part c

Answer 17

@Godlovesme

Answer 18

@Godlovesme

Answer 19

Me nether :(

Answer 20

i actaley got it