F (x) = 3x+2 / x-1 untuk x ≠ 1, maka invers fungsi f (x) adalah​

Step-by-step explanation:

hello : F (x) = 3x+2 / x-1

let : F (x) = yx  ?

y= 3x+2 / x-1

y(x-1) =3x+2

yx-y= 3x+2

yx-3x = y+2

x(y-3) = y+2  

for y ≠ 3

x= (y+2)/(y-3)

invers fungsi f (x)  :   g(x) =  (x+2)/(x-3)   x ≠ 3

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.