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Mathematics 13 Online
OpenStudy (anonymous):

~~!!help i need help :-(!!~~

OpenStudy (anonymous):

Maddy and Caitlin spend a certain amount of money from their money box each month to buy bracelet-making supplies. The table shows the relationship between the amount of money (y) remaining in Maddy's money box and the number of months (x): Function 1 Number of Months (x) Amount Remaining (in dollars) (y) 1 100 2 80 3 60 4 40 The equation shows the relationship between the amount of money (y) remaining in Caitlin's money box and the number of months (x): Function 2: y = −18x + 120 Which statement explains which function shows a greater rate of change? Function 2 shows a greater rate of change, because Maddy spends $20 each month and Caitlin spends $18 each month. Function 2 shows a greater rate of change, because Maddy spends $100 each month and Caitlin spends $120 each month. Function 1 shows a greater rate of change, because Maddy spends $20 each month and Caitlin spends −$18 each month. Function 1 shows a greater rate of change, because Maddy spends $20 each month and Caitlin spends $18 each month.

OpenStudy (anonymous):

@carolinar7 @jasmineETTA @OOOPS @Nnesha @e.mccormick

OpenStudy (anonymous):

help

OpenStudy (anonymous):

function2, what is the slope?

OpenStudy (anonymous):

one sec

OpenStudy (anonymous):

i got m=−18,b=120 where m is the slope and b is the y-intercept

OpenStudy (anonymous):

noo m=−18

OpenStudy (anonymous):

-18 is a slope of function 2 Now, function1, what is its slope?

OpenStudy (anonymous):

\(\dfrac{y_2-y_1}{x_2-x_1}\)

OpenStudy (anonymous):

y=−20x+120

OpenStudy (anonymous):

yes, so the slope is -20, right?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Now compare the two, -18, and -20, which one is steeper?

OpenStudy (anonymous):

-20

OpenStudy (anonymous):

yes,

OpenStudy (anonymous):

:T

OpenStudy (anonymous):

so function 1 has the slope steeper than function2, that is the rate of change of function1 is greater than ...... which one is the correct answer?

OpenStudy (anonymous):

A :D

OpenStudy (anonymous):

A or D?

OpenStudy (anonymous):

A i was just smilling

OpenStudy (anonymous):

again, which one do you choose??

OpenStudy (anonymous):

A i pick A

OpenStudy (anonymous):

OMG!! you didn't pay attention to my guide!!! waste my time. it's D

OpenStudy (anonymous):

sorry

OpenStudy (anonymous):

i thought u didnt understand what i was saying GOSH

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