By evaluating the <em>linear</em> function f(x) = x - 3 at x = 5 and discarding the another function in the table given, we conclude that f(5) = 2 belongs to that <em>linear</em> equation.
<h3>What function contains a given relationship?</h3>
In this problem we must check if the given relationship between the <em>independent</em> variable (x) and the <em>dependent</em> variable (y) exists in any of the two functions: (i) a table, (ii) an expression.
After a quick analysis, we conclude that f(5) = 2 is a point of the linear function f(x) = x - 3. Here is the proof:
So before i give u the answer i will explain step 1- Underline key info( 40PIZZA and 120 PEOPLE) step 2- do 140\40 which then u will get 3( we do this cause we wanna find out how many times this number can go into 120) step 3- ur answer is 3 pizza per person