Generated in gnuplot with the following script:

set terminal svg size 1000 1000 fixed enhanced fname 'Times'  fsize 36
set output "function-x.svg"

set samples 10

set autoscale fix
set xrange [-8:8]
set yrange [-8:8]

set grid
set xzeroaxis linetype -1 linewidth 2
set yzeroaxis linetype -1 linewidth 2

set key left

plot x lw 4

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	This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue

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You are free:

• to share – to copy, distribute and transmit the work
• to remix – to adapt the work

Under the following conditions:

• attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
• share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

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You may select the license of your choice.