Question

plz ive been at this for a week my teacher will not let me move on un till i answer this one thing and i have some much home work plz

Mellissa plotted the graph of a function. The function contains the points (2, 4) and (3, 6). The domain of the function is all whole numbers.

Mr. Wilson reviewed her work and said that the graph is incorrect. Explain why this graph is incorrect.

We do know that the domain is all whole numbers. That is what the problem is telling us. We are supposed to figure out why the graph does not support a domain of all whole numbers.

Answer 1

If the graph contains lines, that would contain real numbers. Whole number domain graph can contain only dots, crosses or similar "one point" symbols.

Answer 2

ok

Answer 3

but why does the graph not support a domain of all whole numbers.

Answer 4

well if its a line graph the domain is all real numbers

Answer 5

- not just whole numbers

Answer 6

this is it

Answer 7

Yeah, just remove the line/arrow and keep only the dots.

Answer 8

yes - the domain is not just whole numbers for this graph

Answer 9

so its both

Answer 10

you could pick out many many points on this graph - any point on the line!

Answer 11

what do you mean both?

Answer 12

both real and whole numbers

Answer 13

Any point that touches a vertical line can have a dot on it. (the domain (x coordinates) is limited to whole numbers, the range is not necessarily limited).

Answer 14

the domain of a function is the set of all possible values of x
- only possible values here are whole numbers

Answer 15

The graph with line contain values for x=1/2, 2.4, 12.7, pi, all real number (positive, as the arrow starts at 0). For the domain of whole numbers, you need to have dots only where whole numbers lays on the x-axis.

Answer 16

so the answer is?

Answer 17

This graph with line/arrow contains values which are out of the domain of whole numbers.

Answer 18

ok thank you everyone for the help hopefully she will let me move on