Which represents the inverse of the function f(x) = 4x?

h(x) = x + 4
h(x) = x – 4
h(x) = x3/4x
h(x) = x1/4x

Question

Which represents the inverse of the function f(x) = 4x?

h(x) = x + 4
h(x) = x – 4
h(x) = x3/4x
h(x) = x1/4x

campbell_st · Answer

to find an inverse, swap x and y 

x = 4y

now make y the subject.... and the answer is the inverse

anonymous · Answer

which is 3????

anonymous · Answer

$$given\ f(x)= 4x\to \ find \ inverse\ of\ f(x) \ say \ h(x)\ switch\  x \ and \ f(x) \ i.e.\ x=4f(x)\solve\ for\ f(x)\here\ f(x)=\frac{ x }{ 4 }\replace \ f(x)\  by\  h(x)\ get\ h(x)= \frac{ x }{ 4 }$$

anonymous · Answer

@elzabeth22950 sure! options 4th posted correctly? $$h(x)=\frac{ x }{ 4} is \ correct.$$