What is the inverse of the function f(x) =2x+1?

Step-by-step explanation:

Given: f(x)=2x+1

To find: The inverse of f(x)

Step 1: Set f(x)=y

y = 2x + 1

Step 2: Switch x and y

x = 2y + 1

Step 3: Solve for y

2y=x-1

We assumed y=f(x)

switch x and y

Thus,

Hence, The inverse of f(x)=2x+1 is

answer: i believe c. is the answer sorry if i am wrong

step-by-step explanation:

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18