3pointmaster 3pointmaster
  • 16-06-2016
  • Mathematics
contestada

which of the following expressions is the inverse of the function y=3x+4

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Nonportrit
Nonportrit Nonportrit
  • 25-08-2018

Options:

A. y = 3x - 4

B. y = -3x - 4

C. y = x - 4 / 3

D. y = x + 4 / 3

The answer is option C when your doing inverse functions you need to switch the variables but substituting x with y. So, the equation would look like this:

  • y = 3x + 4 ---> x = 3y + 4
  • x = 3y + 4
  • Subtract 4 on both sides:
  • Then divide 3 on both sides: " [tex] \frac{x - 4}{3} =y [/tex] or option C "

Hope this helps!

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