Question

For the function f(x) = x + 7, what is the ordered pair for the point on the graph when x = 2b?

(2b, 2b + 7)

(2b, x + 7)

(x, x + 7)

(x, 2b + 7)

Answer 1

f(2b)=?

Answer 2

Replace everything with x in f(x)=x+7 with 2b

Answer 3

your ordered pair will be in the form (x,f(x))

Answer 4

Oh hey there, again! :D

Okay erm...

f(x) = x + 7
f(2b) = 2b + 7

I replaced the 'x's. :))

Answer 5

So which do you think he is proper choice above?
You already replaced x with 2b (so x=2b)
And the output you got is f(2b).
So just replace those in here:
(x,f(x))
(2b,f(2b))
You put f(2b) in. :)