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Mathematics 8 Online
OpenStudy (itrymath):

i have question, please help

OpenStudy (itrymath):

OpenStudy (caozeyuan):

so do you have answer already?

OpenStudy (caozeyuan):

no, because a function can only have one value of y for each value of x

OpenStudy (caozeyuan):

and you have two values of y when x=2

OpenStudy (caozeyuan):

now, how about part B

OpenStudy (caozeyuan):

I kind of didnt get that

OpenStudy (caozeyuan):

basicall if you cant have a single value of x being mapped to two different values of y

OpenStudy (caozeyuan):

do you get part A?

OpenStudy (caozeyuan):

ok, tell me when you have an answer

OpenStudy (caozeyuan):

explain what the 2 means in the situation given in the question

OpenStudy (caozeyuan):

ok, the answer is "if she is standing 4 meters away, he can get 2 goals"

OpenStudy (caozeyuan):

now, how about C

OpenStudy (caozeyuan):

yep, and the answe?

OpenStudy (caozeyuan):

You kind of missed the second half of the question, part C refers to a new distance, and what is it?

OpenStudy (caozeyuan):

no, now your even further away

OpenStudy (caozeyuan):

it says he is p meter away

OpenStudy (caozeyuan):

y=-p+6

OpenStudy (caozeyuan):

so the answer is (p,-p+6)

OpenStudy (caozeyuan):

now, go read the question again, make sure you know what exactly is it talking about

OpenStudy (caozeyuan):

do you see that it specifically tells you the distance is p, not 4

OpenStudy (caozeyuan):

so whats the other value?

OpenStudy (caozeyuan):

well you are told to write an order pair so (x,y) and you are told x+p, so wahts y

OpenStudy (caozeyuan):

the answer is (p,-p+6) becuase the first number is your independent variable, the second number is your function

OpenStudy (caozeyuan):

and the function is -x+6 so f(p)=-p+6, get it?

OpenStudy (caozeyuan):

now Im gonna go back and catch some sleep

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