anonymous
  • anonymous
i will fan and medal
Mathematics
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
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anonymous
  • anonymous
Which of the following expressions is the inverse of the function y equals quantity x minus 2 divided by 3? y = 3x + 2 y = 2x + 3 y equals quantity x minus 3 divided by 2 y equals quantity x plus 2 divided by 3
anonymous
  • anonymous
What does "quantity x minus 2 divided by 3" look like?
anonymous
  • anonymous
y = x - 3 / 2

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anonymous
  • anonymous
So would it be \[y=x-\frac{3}{2}\]
anonymous
  • anonymous
nah
anonymous
  • anonymous
Nah? Can you draw it out then?
anonymous
  • anonymous
|dw:1433789950204:dw|
anonymous
  • anonymous
sorry for the bad drawing
anonymous
  • anonymous
Which of the following expressions is the inverse of the function y equals quantity x minus 2 divided by 3? Which of the following expressions is the inverse of the function \(y = \dfrac{x - 2}{3}\)? Does that look right to you, as your question?
anonymous
  • anonymous
why you don't study well?
anonymous
  • anonymous
yup
anonymous
  • anonymous
i came here for help @k142
anonymous
  • anonymous
it is not help you are just looking for answers.
anonymous
  • anonymous
@k142 ask @Algorithmic if i only came here for answers
anonymous
  • anonymous
It is okay. I just wanted to tell you that way will never help you and you'll fail your exams.
anonymous
  • anonymous
thanks for your advice but i don't need it
anonymous
  • anonymous
can you help @Algorithmic because @k142 is just giving me advice
anonymous
  • anonymous
smh
anonymous
  • anonymous
\[y^{-1} = \dfrac{x - 2}{3} \implies x = \dfrac{y - 2}{3} \implies 3 \times x = \dfrac{y - 2}{3} \times \dfrac{3}{1} \] \[3x = y - 2\implies 3x + 2 = y\] Did you understand all that?
anonymous
  • anonymous
Basically switch out \(y\) to \(x\), then try for isolate \(y\).
anonymous
  • anonymous
why did u put 3*x
anonymous
  • anonymous
and the 3 over 1
anonymous
  • anonymous
This \(3 \times x = \dfrac{y - 2}{3} \times \dfrac{3}{1}\) is the same as \(\dfrac{3}{1} \times x = \dfrac{y - 2}{3} \times \dfrac{3}{1}\). The \(\dfrac{3}{1}\) is used to cancel out the three under the \(y - 2\) numerator. \[\dfrac{3}{1} \times x = \dfrac{y - 2}{\cancel{3}} \times \cancel{\dfrac{3}{1}}\]
anonymous
  • anonymous
i understand now <3
anonymous
  • anonymous
\(\dfrac{3}{1} \times x\) simplies to \(3x\).
anonymous
  • anonymous
All right, great.

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