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Mathematics 8 Online
OpenStudy (anonymous):

Please Help !! ASAP Fan And Medal

OpenStudy (anonymous):

OpenStudy (anonymous):

@Michele_Laino @Kanra

OpenStudy (michele_laino):

question#1: hint: y=24 and x=36, then we can write 24= 36-12

OpenStudy (anonymous):

so like?

OpenStudy (michele_laino):

you have to search for the right formula, which links x with y

OpenStudy (michele_laino):

for example, if I choose y=18, and x=30, namely I choose data from the first row, I can write this: 30-6= 24, which is different from 18, so the first formula, namely y=x-6 is not the right formula

OpenStudy (michele_laino):

furthermore, we have: x+6= 30+6= 36 which is different from 18, so also the last option is not the right option

OpenStudy (michele_laino):

so what is the right formula? it is the formula in the second option or in the third one?

OpenStudy (anonymous):

2nd @Michele_Laino

OpenStudy (michele_laino):

let's check your answer: the second option is: y=x-10, so if I replace x with 30, and y with 18, I get: 18= 30-10 which is a false statement so the second option can not be the right option

OpenStudy (anonymous):

so the third @Michele_Laino

OpenStudy (michele_laino):

correct!

OpenStudy (michele_laino):

question #2 here we have to compute y when x=64, and we have to use the formula of question #1 so we have to do this computation: y=x-12=64-12=...?

OpenStudy (anonymous):

idk

OpenStudy (anonymous):

@Michele_Laino

OpenStudy (michele_laino):

what is 64-12=...?

OpenStudy (anonymous):

52

OpenStudy (michele_laino):

so, what is the right option?

OpenStudy (anonymous):

2nd

OpenStudy (michele_laino):

correct!

OpenStudy (anonymous):

@Michele_Laino then 2 more after this

OpenStudy (michele_laino):

here we have to find the right formula, which links x with y

OpenStudy (anonymous):

ok

OpenStudy (michele_laino):

from your data I see that when: x=1 ---> y=18 x=2 ---> y=36 x=3 ---> y= 54 x=4 ---> y=72 namely each y-value is 8-times of the corresponding x-value so what is the formula?

OpenStudy (michele_laino):

oops.. each y-value is 18-times of the corresponding x-value

OpenStudy (anonymous):

ok

OpenStudy (michele_laino):

so, what is the formula which links x with y?

OpenStudy (michele_laino):

is the right formula this one: y=18x

OpenStudy (anonymous):

idk too be honest

OpenStudy (michele_laino):

it is the right for ula, since if we replace x with 1, we have: y=18*1=18 if we replace x with 2, we have:y= 18*2=36 if we replace x with 3 we have: y=18*3=54, and finally if we replace x with 4 we have: y=18*4=72

OpenStudy (michele_laino):

formula*

OpenStudy (michele_laino):

so, if we replace x with 8, we get: y=18*x=18*8=...?

OpenStudy (anonymous):

144 @Michele_Laino

OpenStudy (michele_laino):

correct!

OpenStudy (michele_laino):

second question: I consider the first point, namely x=0, and y=8 Then I substitute them into the formula y=8x, so I get: 8= 8*0=0 which is a false statement, so the first point can not be the right option

OpenStudy (michele_laino):

now, please try with other points

OpenStudy (anonymous):

wym @Michele_Laino

OpenStudy (anonymous):

nvm bro im done

OpenStudy (michele_laino):

question #5, Hint: if I replace x with 2, I get this: \[\Large y = x + \frac{2}{5} = 2 + \frac{2}{5}\] so what is the right option?

OpenStudy (anonymous):

its all good man I passed it lol

OpenStudy (michele_laino):

ok! :)

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