Question

HELP PLEASE I AM NEW TO THIS!!!!??? Tom and Jack spend a certain amount of money from their accounts each week at a pet shelter.

The table shows the relationship between the amount of money (y) remaining in Tom's account and the number of weeks (x):

Function 1:


Number of Weeks
(x) Amount Remaining (dollars)
(y)
1 60
2 53
3 46
4 39


The equation shows the relationship between the amount of money, y, remaining in Jack's account and the number of weeks, x:

Function 2:

y = –8x + 60

Which statements states and explains which function shows a greater rate of change?
F

Answer 1

@priyar

Answer 2

@rebeccaxhawaii

Answer 3

rate of change = slope =( y2-y2)/(x2-x1) u know this ? @kalua891

Answer 4

kind of @priyar

Answer 5

i forgot to put this
Which statements states and explains which function shows a greater rate of change?
Function 1, because Tom spends $7 each week and Jack spends –$8 each week
Function 1, because Tom spends $21 each week and Jack spends $52 each week
Function 2, because Jack spends $60 each week and Tom spends $21 each week
Function 2, because Jack spends $8 each week and Tom spends $7 each week

Answer 6

ok take two values y1 and y2 and the corresspondind x1, x2 values and plug them in the abv formula of slope.ok?

Answer 7

what do you mean? @priyar

Answer 8

i think it is b function 2

Answer 9

how can u say that? did u solve the Q or just guessing?

Answer 10

i solved it i put in the numbers did i do something wrong maybe?

Answer 11

my friend told me it was b but i don't think so now

Answer 12

see pls understand how to solve the problem..otherwise how will u solve other problems like these?

Answer 13

true

Answer 14

how can i plug the exponents tho I'm confused? @priyar

Answer 15

its actually simple..! first, y1 and y2 are two value from the right side of the table (since they are denoted by the letter 'y'. thats what the Q says right? :) ) similar explanation for x1 and x2.. any doubts so far?

Answer 16

nop

Answer 17

so after that? @priyar

Answer 18

good! so pick out any two values of y and corresponding values of x.. now name them as y1,y2 and x1,x2...what are ur values ? (write them along with their names..)

Answer 19

y 60 and y 46?

Answer 20

@priyar

Answer 21

i really have to go!? @priyar

Answer 22

sry.. had connectivity issues..@kalua891
no i meant values next to each other..only then we c an determine the rate of change..right? so i have
y1=53 x1=2
y2=60 x2=1
Now plug them in..

Answer 23

@kalua891?

Answer 24

if we plug in these values we get:
slope = (60-53)/(1-2)
= -7
so slope of function 1 =-7

Answer 25

the second function is in the form of:
y=mx+c where m is the slope..here the eq is:
y=-8x+60 so, what is m? (just compare this with the general form..u can tell just by looking!)
after obtaining both slopes compare them to find the correct option..
Hope this helps!