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For the function f(x) = x + 7, what is the ordered pair for the point on the graph when x = 2b
A. ( 2b, 2b+7)
B. ( 2b, x + 7)
C.( x, x + 7 )
D. (x, 2b + 7)

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Answer:

A. (x,y)=(2b,2b+7)

Step-by-step explanation:

We have the function [tex]f(x)=x+7[/tex] and we have to replace x=2b in the function.

Observation: [tex]y=f(x)[/tex]

This means:

[tex]f(x)=x+7\\f(2b)=2b+7\\y=2b+7[/tex]

Then when x=2b, y=2b+7. The ordered pair corresponding to x=2b is

(x,y)=(2b,2b+7)

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