A function with an input of 4 has an output of 10. Which of the following could not be the function equation?
y = x + 6
y = 2x + 3
y = 14 - x
y = (2.5)x

Question

A function with an input of 4 has an output of 10. Which of the following could not be the function equation?
y = x + 6
y = 2x + 3
y = 14 - x
y = (2.5)x

parthkohli · Answer

If x = 4, and you're getting 10, then you're certainly adding 6 to x. You have the answer lol

parthkohli · Answer

The first one *cough*

mathteacher1729 · Answer

@ParthKohli  If x = 3  then 14 - x = 10 as well. This question is asking the student for the function which is NOT going to work.

mathteacher1729 · Answer

@flame619 you may want to give this question another try.

parthkohli · Answer

Oh so I see that the second one is NOT working.

mathteacher1729 · Answer

Sorry if x = 4, then 14 - x = 10, I made a typo, sorry.

parthkohli · Answer

$\Large \color{Black}{\Rightarrow 2(4) + 3 \neq 10 }$

mathteacher1729 · Answer

Either way -- @flame619 this problem is asking for the function which does NOT fit the description given in the problem statement. 

When x = 4 which function does NOT give y = 10? That is what's being asked.