The coordinate surfaces of the Cartesian coordinates (x, y, z). The z-axis is vertical and the x-axis is highlighted in green. Thus, the red plane shows the points with x = 1, the blue plane shows the points with z = 1, and the yellow plane shows the points with y = â1.
Generally speaking, rap was started in the Bronx, New York in the 1970âs. Because of personal recollections and the myth-making aspect of hip hop, itâs hard to isolate the exact time and place where rap started or who exactly should be considered the inventor of rap.
This is the history of Twitter. Twitter began as an idea that Twitter co-founder Jack Dorsey (@Jack) had in 2006. Dorsey had originally imagined Twitter as an SMS-based communications platform. Groups of friends could keep tabs on what each other were doing based on their status updates. Like texting, but not.