# Thread: Drawing a binary graph

1. ## Drawing a binary graph

This problem is confusing me a little, specifically the "x|y."

Would this be correct? The loops around the numbers signify a relation.

2. Originally Posted by DonAvery86
This problem is confusing me a little, specifically the "x|y."
x|y means x divides y. that is, y/x = integer

now can you continue?

3. Hello, Don!

Do you understand that $x|y$ means " $x\text{ divides }y$" ?

Since every number divides itself, your diagram is correct . . . so far.

But you missed a few others . . .

. . 2 divides 4, 2 divides 6, 2 divides 8.
. . 3 divides 6.
. . 4 divides 8.

You should have arrows indicating those pairs, too:

. $\begin{array}{ccc}& & 4 \\ & \nearrow & \\ 2 & \rightarrow & 6 \\ & \searrow & \\ & & 8 \end{array}\qquad \text{and }\;3\to6\qquad \text{and }\;4\to8$

4. Originally Posted by Soroban
Hello, Don!

Do you understand that $x|y$ means " $x\text{ divides }y$" ?

Since every number divides itself, your diagram is correct . . . so far.

But you missed a few others . . .

. . 2 divides 4, 2 divides 6, 2 divides 8.
. . 3 divides 6.
. . 4 divides 8.

You should have arrows indicating those pairs, too:

. $\begin{array}{ccc}& & 4 \\ & \nearrow & \\ 2 & \rightarrow & 6 \\ & \searrow & \\ & & 8 \end{array}\qquad \text{and }\;3\to6\qquad \text{and }\;4\to8$

Nice use of LaTex!

5. We should have Latex art competitions.

6. We should have Latex art competitions.

7. Yeah, creative

I made it with MathType. (Which really takes less time.)

The following code is required:

\begin{array}{*{20}c}
{} & {} & 4 \\
{} & \nearrow & {} \\
2 & \to & 6 \\
{} & \searrow & {} \\
{} & {} & 8 \\
\end{array}, so

$\begin{array}{*{20}c}
{} & {} & 4 \\
{} & \nearrow & {} \\
2 & \to & 6 \\
{} & \searrow & {} \\
{} & {} & 8 \\
\end{array}$