Question

Tomas created a function table using the equation y = x + 4. Which table is correct?

Answer 1

Since you did not include the choices to select the correct table, I will 1) explain you how to creat a table, and 2)  create a table w hich which you migh compare with your choices:

1) How to make a table

For the function y = x + 4, the variable x is the input and the variable y is the output.

A table consists of a sequence of pairs x, y.

You choose the x-values and calculate th y-values using the function.

For expample if you choose x = 3 as your input, then the output is given by the function y = x + 4, so you subsititute x = 3 and obtain y = 3 + 4 = 7.

And the table is represented as in the example below.

What you have to do is checking if all the values of the table given satisfy the equation y = x + 4.


2) Table (example):

   x      y = x + 4

 -20         -16

-19          -15

-18          -14

-17          -13

-16          -12

-15           -11

-14           -10

-13             -9

-12             -8

-11             -7

-10             -6

-9               -5

-8              -4

-7              -3

-6              -2

-5              -1

-4               0

-3               1

-2               2

-1               3

 0               4

 1               5

 2               6

 3               7

 4               8

 5               9

 6              10

 7              11

 8              12

 9              13

10             14

 11             15