{"action":"closed","issue":{"url":"https://api.github.com/repos/Khan/khan-exercises/issues/131124","labels_url":"https://api.github.com/repos/Khan/khan-exercises/issues/131124/labels{/name}","comments_url":"https://api.github.com/repos/Khan/khan-exercises/issues/131124/comments","events_url":"https://api.github.com/repos/Khan/khan-exercises/issues/131124/events","html_url":"https://github.com/Khan/khan-exercises/issues/131124","id":23595513,"number":131124,"title":"Estimating the line of best fit - Blank Mastery Challenge","user":{"login":"KhanBugz","id":924247,"avatar_url":"https://avatars.githubusercontent.com/u/924247?v=3","gravatar_id":"","url":"https://api.github.com/users/KhanBugz","html_url":"https://github.com/KhanBugz","followers_url":"https://api.github.com/users/KhanBugz/followers","following_url":"https://api.github.com/users/KhanBugz/following{/other_user}","gists_url":"https://api.github.com/users/KhanBugz/gists{/gist_id}","starred_url":"https://api.github.com/users/KhanBugz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/KhanBugz/subscriptions","organizations_url":"https://api.github.com/users/KhanBugz/orgs","repos_url":"https://api.github.com/users/KhanBugz/repos","events_url":"https://api.github.com/users/KhanBugz/events{/privacy}","received_events_url":"https://api.github.com/users/KhanBugz/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/Khan/khan-exercises/labels/ie9","name":"ie9","color":"ededed"},{"url":"https://api.github.com/repos/Khan/khan-exercises/labels/not-showing","name":"not-showing","color":"28AE7B"},{"url":"https://api.github.com/repos/Khan/khan-exercises/labels/undef","name":"undef","color":"ededed"},{"url":"https://api.github.com/repos/Khan/khan-exercises/labels/win7","name":"win7","color":"ededed"}],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2013-12-02T19:28:44Z","updated_at":"2015-11-20T02:38:14Z","closed_at":"2015-11-20T02:38:14Z","body":"There is no question to answer.\n\n[plotting_the_line_of_best_fit.html?seed=73&problem=linear](http://sandcastle.kasandbox.org/media/castles/Khan:master/exercises/plotting_the_line_of_best_fit.html?seed=73&problem=linear&debug&lang=en)\n\n[Answer timeline](http://sandcastle.kasandbox.org/media/castles/Khan:master/exercises/plotting_the_line_of_best_fit.html?seed=73&problem=linear&debug&lang=en&activity=undefined)\n\n    undefined\n\nLocale: en\n\nUser hash: 1107437073\n\nMozilla/5.0 (compatible; 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