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avatar+128 

If \(y=kx^{\frac{1}{4}}\) and \(y=3\sqrt{2}\) at \(x = 81\), what is the value of \(y\) at \(x = 4\)?

 Sep 19, 2021
 #1
avatar+2322 
+2

y = k x^(1/4)

Let's start by finding k. 

3sqrt(2) = k * (81)^(1/4)

3sqrt(2) = k * 3

k = sqrt(2)

 

y = sqrt(2) * 4^(1/4)

Can you take it from here? :))

 

=^._.^=

 Sep 19, 2021
 #2
avatar+128 
+3

Thx, I get it now laugh

NaturalDisaster  Sep 19, 2021

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