SOLUTION: what is the distance between the orign and the pont representing the real number

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Question 103677: what is the distance between the orign and the pont representing the real number
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Let's say you had the point (x%5B1%5D,y%5B1%5D). So the distance between (0,0) and (x%5B1%5D,y%5B1%5D) is

d=sqrt%28%28x%5B1%5D-0%29%5E2%2B%28y%5B1%5D-0%29%5E2%29

d=sqrt%28%28x%5B1%5D%29%5E2%2B%28y%5B1%5D%29%5E2%29


So let's say we had the point (2,3) and we wanted to know the distance from (0,0) to (2,3)

d=sqrt%28%28x%5B1%5D%29%5E2%2B%28y%5B1%5D%29%5E2%29 Start with the previously solved formula


d=sqrt%282%5E2%2B3%5E2%29 Plug in x%5B1%5D=2 and y%5B1%5D=3


d=sqrt%284%2B9%29 Square each term


d=sqrt%2813%29 Add


So the distance from (0,0) to (2,3) is d=sqrt%2813%29