Function notation of (3,4) and (4,7)

Question

What is the function notation of (3,4) and (4,7)

Answer 1

POORLY EXPRESSED?

 

Perhaps you mean 'find the equation of the line passing through these two given points, and write it in function notation."

 

To do that,

1.  calculate slope m

2. use Point slope form to write the equation, using either one of those points

3.  solve for y; you get y = mx + b

4.  replace y by f(x).

Answer 2

f(3) = 4

f(4) = 7