jay1720 jay1720
  • 01-08-2018
  • Mathematics
contestada

which function is the inverse of f(x)= 3x+5 over 7

Respuesta :

Kristiania Kristiania
  • 01-08-2018

f(x) = (3x+5)/7

Step 1:

we write f(x) as y

y=(3x+5)/7

Step 2:

switch y by x and x by y

x=(3y+5)/7

Step 3:

solve for y,

x=(3y+5)/7

multiply both sides by 7

7x=3y+5

subtract 5 from left side

3y=7x-5

divide both sides by 3

y= (7x-5)/3

f⁻¹ (x) =(7x-5)/3

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