What is the answe to this F(x)=x+2

Question

I do not get this at all

Answer 1

 

Lets pick 5 numbers like 0,1,2,3,and -1

 

Set up a table like This:

 

   X         y=F(x)

---------------------

 -1

  0

  1

  2

  3

 

Now we need to figure out the numbers that go in the second column under y = F(x)

 

The first number is 0. So where-ever you see the X, you put zero.

F(0) = 0 + 2, which is 2. So 2 goes next to the zero in the table.

 

The next number is 1. So where-ever you see the X, you out one (1).

F(1) = 1+2 , which is 3. So 3 goes next to the one in the table.

 

LIkewise, for X=2, F(2) = 2 + 2 = 4. So 4 goes in the table next to the 2.

               forf X=3, F(3) = 3 + 2 = 5. So 5 goes in the table next to the 3.

 

Finally, for x=-1, F(-1) = -1 + 2 = 1. So one (1) goes next to -1 in the table.

 

The table now looks like this:

 

X          y=F(x)
---------------------
-1            1
 0            2
 1            3
 2            4
 3            5

 

Now get you a sheet of graph paper and plot the points

(-1,1) (0,2) (1,3) (2,4) (3,5)

 

They will line up. Each dot will be two square up and one square

to the right of the previous one.