Question

I solved this question, but i need someone to check my work, please :) Given the function f(x) = 2x + 4 find the value when x = -2.

Answer 1

Hi, well i plugged in -2 and then eventually i got 2.

Answer 2

since 2(-2) equals -4 adding 4 would equal 0

Answer 3

then f (-2) equals -2f dividing it would equal 2 ?

Answer 4

is that correct?

Answer 5

f(x) = 2x + 4

Put x = -2

you get : f(-2) = 0..
So, f(-2) = 0 is the right answer...

Answer 6

Then you divid -2 to get f by itself.

Answer 7

Oh no no Srosenfed we have to find f(-2) and not the value of f..
Always in case of function, we find f(x)...

Answer 8

ohhhh... okay i see it. Well thanks! i understand it :D

Answer 9

The purpose of Study together is to make each other understand..

Answer 10

thanks hun. :)