Help me please:(*​

Its worth 10000000 points need asap if you answer correctly ill mark brainliest

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists