Question

Help Pleaseeeeeeee!!

If f(x) = 5-2x and f(3k) = f(k + 1), then f(k)=

Answer 1

simple. using f(3k) = f(k + 1). plug 3k adn k+1 into the first function to get
5-2(3k)=5-2(k+1). solve for k to get 1/2. plug k back in to the original function.

Answer 2

get 4

Answer 3

i got -2

Answer 4

show me what you did

Answer 5

5-6k = 5-2k-2

5-6k = 2k+3

Answer 6

2 = 8k

2/8 = k

1/4 = k

Answer 7

on your second step you left out a negative on the 2k, its -2k not 2k.

Answer 8

instead of 5-6k = 2k+3 its 5-6k = -2k+3

Answer 9

so its 1/2 then

Answer 10

correct. now plug that into your original function: f(x) = 5-2x as x