cliparts/9/b/2/9/clipart-cartesian-plane-0-16-9b29.svg y II IV III I -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -14 -15 -16 x image/svg+xml Open Clip Art Library Cartesian Plane 0-16 2012-07-14T17:12:04 http://openclipart.org/detail/171176/cartesian-plane-0-16-by-xsapien-171176 XSapien clip art clipart graph numbers