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3 years ago

What is the inverse of f(x) = x/5 -2

Mathematics

1 answer:

Cerrena [4.2K]3 years ago

8 0

Answer:

y= 5x+10

Step-by-step explanation:

Inverse basically means y is now x and x is now y.

y= x/5 -2 becomes x= y/5 -2

Remember to always leave your equation f(x) = ...

i.e. y =...

x= y/5 -2

add 2 both sides

x+2 = y/5

multiply 5 both sides

5(x+2) = y

Hence,

y= 5x + 10

Hope this helps!

Please mark brainliest if you think I helped! Would really appreciate!

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Hope it helps

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2 years ago

Use linear approximation to approximate √25.3 as follows.

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The idea is to use the tangent line to $f(x)=\sqrt x$ at $x=25$ in order to approximate $f(25.3)=\sqrt{25.3}$ .

We have

$f(x)=\sqrt x\implies f(25)=\sqrt{25}=5$

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Then

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