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Mathematics 15 Online
OpenStudy (anonymous):

The range of the following relation: R: {(3, −2), (1, 2), (−1, −4), (−1, 2)} is {−1, 1, 3} {−1, −1, 1, 3} {−4, −2, 2, 2} {−4, −2, 2}

OpenStudy (zzr0ck3r):

its the y values and sets don't repeat numbers

OpenStudy (mathstudent55):

Range of a function: set of y values of all ordered pairs.

OpenStudy (zzr0ck3r):

so the third option does not even make sense...

OpenStudy (anonymous):

is it A ?

OpenStudy (zzr0ck3r):

what is the y value of (3,-2)?

OpenStudy (zzr0ck3r):

hint: (x,y)

OpenStudy (zzr0ck3r):

@broweyebrit ?

OpenStudy (anonymous):

im not sure...

OpenStudy (zzr0ck3r):

what is the y value of (3,-2) note that the x value is the first and the y value is the second

OpenStudy (zzr0ck3r):

so what is the y value?

OpenStudy (anonymous):

1 ?

OpenStudy (zzr0ck3r):

are you joking? I show you two numbers, then tell you the y value is the second number, then I ask which one is the y value and you say something that is not listed?

OpenStudy (zzr0ck3r):

(3,-2) the y value is the second number what is the y value?

OpenStudy (anonymous):

you dont have be mean about this im new to this, you need to chill.

OpenStudy (zzr0ck3r):

lol trying to make you think and not just throw out a number

OpenStudy (zzr0ck3r):

(3,-2) the y value is the second number what is the y value?

OpenStudy (anonymous):

-2

OpenStudy (zzr0ck3r):

good

OpenStudy (zzr0ck3r):

(1, 2) what is the y value?

OpenStudy (anonymous):

2

OpenStudy (zzr0ck3r):

(−1, −4)

OpenStudy (anonymous):

-4 =y

OpenStudy (zzr0ck3r):

and last but not least (−1, 2) ?

OpenStudy (anonymous):

2

OpenStudy (zzr0ck3r):

ok so our y values are -2,2,-4,2 but when we make a set with these things {} we do not list anything twice so, the set of y values (also known as the range) is {-4,-2,2}

OpenStudy (zzr0ck3r):

make sense?

OpenStudy (zzr0ck3r):

to find the domain you would do the same thing with the x values...

OpenStudy (zzr0ck3r):

sorry for being rude:)

OpenStudy (anonymous):

oh okay i get it, thank you! and its fine! (:

OpenStudy (zzr0ck3r):

also know that with sets, there is no order {1,2,3} = {3,2,1} = {2,1,3}

OpenStudy (anonymous):

Is the following relation a function? x y 1 −2 1 −3 2 1 3 −2 Yes No

OpenStudy (anonymous):

can you help me with thins one ? @zzr0ck3r

OpenStudy (zzr0ck3r):

so with functions we cant ever have the same x value going with 2 or more different y values.

OpenStudy (zzr0ck3r):

does that happen here?

OpenStudy (zzr0ck3r):

if you don't know the answer to this list the point EX: (1,-2)

OpenStudy (zzr0ck3r):

list the points*

OpenStudy (anonymous):

yes it happens there

OpenStudy (anonymous):

yes it happens there

OpenStudy (anonymous):

yes it happens there

OpenStudy (anonymous):

yes it happens there

OpenStudy (anonymous):

yes it happens there

OpenStudy (zzr0ck3r):

then its not a function

OpenStudy (anonymous):

sorry it i sad it to many times it said it wasnt sending lol

OpenStudy (anonymous):

okay thanks!

OpenStudy (zzr0ck3r):

lol, happens to me all the time

OpenStudy (zzr0ck3r):

np

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