mfchetek mfchetek
  • 02-07-2020
  • Mathematics
contestada

PLEASE HELP!
Which of the following functions are the inverse of p(x)= √5x+7 ?

PLEASE HELP Which of the following functions are the inverse of px 5x7 class=

Respuesta :

temdan2001
temdan2001 temdan2001
  • 08-07-2020

Answer: B

Step-by-step explanation:

You are given the function

p(x) = √5x+7

Let p(x) = y then,

Y = √5x+7

To find the inverse of a function, you need to interchange x and y and make y the subject of formula. That is,

X = √5y+7

Square both sides

X^2 = 5y + 7

Make y the subject of formula

5y = x^2 - 7

Y = ( x^2 - 7 ) / 5

the correct answer is B

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