Mathematics
6 Online
OpenStudy (anonymous):
What is the domain of f(x)?
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OpenStudy (anonymous):
OpenStudy (anonymous):
integers from -1 < x < 2
integers from -3 < y ≤ 3
integers from -3 ≤ y < 3
integers from -1 ≤ x ≤ 2
OpenStudy (anonymous):
some one please help
OpenStudy (welshfella):
the domain is the set of values of x
can you list the x-coordinates of the 4 points on the diagram?
OpenStudy (anonymous):
(-1,-3)
(0,1)
(1,2)
(2,3)
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OpenStudy (anonymous):
OpenStudy (welshfella):
right thats the x and y coordinates of the 4 points
what are the x coordinates?
OpenStudy (anonymous):
as in
OpenStudy (welshfella):
the first number in the parentheses
-1 , 0 , 1 and 2
OpenStudy (anonymous):
ok
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OpenStudy (welshfella):
thats in your domain - those 4 integers
now you need to express it as a range as in the options
OpenStudy (welshfella):
which one corresponds to the list -1 , 0 , 1 , 2
OpenStudy (anonymous):
it would be A
OpenStudy (anonymous):
right?
OpenStudy (welshfella):
no because -1 < x < 2
means greater than -1 and less than 2
- this does not include -1 and 2
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OpenStudy (anonymous):
its d
OpenStudy (welshfella):
this would correspond to 0 and 1 only
OpenStudy (welshfella):
right integers including -1 and 2
OpenStudy (welshfella):
d is correct
OpenStudy (anonymous):
thanks
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OpenStudy (welshfella):
yw
OpenStudy (anonymous):
thank you so much