SOLUTION: If the distance of the point (x, -3) find the origin is 5 unit, find the value of x

Algebra ->  Graphs -> SOLUTION: If the distance of the point (x, -3) find the origin is 5 unit, find the value of x      Log On


   

Question 938130: If the distance of the point (x, -3) find the origin is 5 unit, find the value of x
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Use the distance formula
+d%5E2+=+%28+x+-+0+%29%5E2+%2B+%28+-3+-+0+%29%5E2+
+d%5E2+=+x%5E2+%2B+3%5E2+
---------------------
+d+=+5+
+5%5E2+=+x%5E2+%2B+3%5E2+
+25+=+x%5E2+%2B+9+
+x%5E2+=+16+
+x+=+4+
+x+=+-4+