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OpenStudy (anonymous):
Which of the following statements will have the same result? Explain each step in solving each one
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OpenStudy (anonymous):
f(3) when f(x)=2x+2
OpenStudy (anonymous):
f^-1(4) when f(x) = 3x-4/5
OpenStudy (anonymous):
y+10=2y+1
OpenStudy (anonymous):
@Mertsj can you help me :)
OpenStudy (mertsj):
f(3) for the first one is 8
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OpenStudy (mertsj):
In the second one, f inverse is(1/3)x + 4/15
so f^(-1)(4)=4/3 + 4/15=20/15+4/15=24/15=8/5
OpenStudy (mertsj):
I'm not sure what you mean by the third one because it simplifies to y = 9
OpenStudy (anonymous):
Hmm yeah so none of them equal to the same thinggg
OpenStudy (anonymous):
and where did you get 15 from?
OpenStudy (mertsj):
You need to check out the third one. I think it might be posted incorrectly. Isn't it supposed to have an x in it?
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OpenStudy (mertsj):
1/3 times 4/5 = 4/15
OpenStudy (anonymous):
no its y + 10 = 2y + 1
OpenStudy (mertsj):
Then none of them have the same result.
OpenStudy (anonymous):
and for the second dont you have to change f(x) to y and change the x and y
OpenStudy (mertsj):
yes
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OpenStudy (mertsj):
y=3x-4/5
x=3y-4/5
x+4/5=3y
(1/3)x+4/15=y
OpenStudy (anonymous):
@Mertsj When I explain the 2nd one can I say sub. 4 into x..cause the answer comes out to 8/5 still
OpenStudy (mertsj):
yes
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