 <translate> I got a question for you: In the 1979 -- 80 season, after having tested it in the previous pre-season, the NBA adopted the three-point line despite the view of many that it was a gimmick. Chris Ford of the Boston Celtics is widely credited with making the first three-point shot in NBA history on October 12, 1979. Kevin Grevey of the Washington Bullets also made one on the same day.

Based on this passage, when did the nba institute the 3 point shot?
Let's think first: <yor> Mo ní ìbéèrè kan fún yín: Ní ọdún 1979 sí 1980, lẹ́yìn tí wọ́n ti dán an wò ní ọdún tí ó ṣáájú, àjọ NBA gba òpó ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà-ìlà Chris Ford ti Boston Celtics ni o gbajumo fun ṣiṣe iṣan mẹta akọkọ ni itan-akọọlẹ NBA ni Oṣu Kẹwa Ọjọ 12, ọdun 1979. Kevin Grevey ti ikọ̀ Washington Bullets náà ṣe èyí kan ní ọjọ́ kan náà.  Ní ìbámu pẹ̀lú àyọkà yìí, ìgbà wo ni àjọ nba dá ọ̀nà ìṣeré orí ẹ̀ẹ́dẹ́gbẹ̀ta sílẹ̀? Ẹ jẹ́ ká kọ́kọ́ ronú: 