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Mathematics 8 Online
OpenStudy (anonymous):

Give the function f described by f(x)=-x-7, find f(-7). f(-7)=

Parth (parthkohli):

Well, what happens to \(x\) is that it is negatived and then 7 is subtracted.

OpenStudy (anonymous):

ok?

Parth (parthkohli):

How you can look at it is that every number gets \(-\text{number} - 7\) by the function f.

Parth (parthkohli):

So, if we input \(-7\) in \(f\), then the output will be \(-(-7) - 7\)

Parth (parthkohli):

What is -(-7)?

OpenStudy (anonymous):

-7?

Parth (parthkohli):

No!

Parth (parthkohli):

-(-7) = +7

OpenStudy (anonymous):

So the answer is 7?

Parth (parthkohli):

No, we originally had -(-7) - 7 which becomes 7 - 7.

OpenStudy (anonymous):

So what is the answer?

Parth (parthkohli):

What is 7 - 7?

OpenStudy (anonymous):

0

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