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Mathematics 18 Online
OpenStudy (howard-wolowitz):

HElp plz!

OpenStudy (howard-wolowitz):

hold on i messed up with the question

OpenStudy (howard-wolowitz):

\[f(x) = \sqrt[3]{x}\]

OpenStudy (howard-wolowitz):

\[g(x) = \sqrt[3]{4/5x}\]

OpenStudy (michele_laino):

Sorry what is your question, since I see only a function

OpenStudy (howard-wolowitz):

Identfiy a horizontal or vertical stretch or compression of the first function by observing the second equation

OpenStudy (howard-wolowitz):

A. A vertical strecth by a factor of 5/4

OpenStudy (howard-wolowitz):

B. A vertical compression by a factor of 5/4

OpenStudy (howard-wolowitz):

C. A horizontal stretch by a factor of 5/4

OpenStudy (howard-wolowitz):

D. A horizontal compression by a factor of 5/4

OpenStudy (howard-wolowitz):

Did I make this question clear?

OpenStudy (michele_laino):

yes!

OpenStudy (howard-wolowitz):

ok good

OpenStudy (michele_laino):

I think that your function can be written as below: \[\begin{gathered} z = \frac{4}{5}x \hfill \\ y = f(z) = \sqrt[3]{z} \hfill \\ \end{gathered} \]

OpenStudy (howard-wolowitz):

Ok by writing the equation like this it would make it vertical right

OpenStudy (michele_laino):

no, it is a trasformation of the x-axis

OpenStudy (michele_laino):

for example when x= 5, what is z?

OpenStudy (howard-wolowitz):

so does that mean strecth

OpenStudy (howard-wolowitz):

5

OpenStudy (michele_laino):

no, if x=5 then z= (4/5) * 5 = 4, namely the point x=5 is mappend in the point z=4, then the x-axis has been compressed

OpenStudy (howard-wolowitz):

Ok by thatinfo I'm going with D!

OpenStudy (michele_laino):

that's right!

OpenStudy (howard-wolowitz):

see this is good because you explain it very goodly and that makes it where I can pick a answer!!!!1 :)))

OpenStudy (michele_laino):

thank you! :)

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