Question

If y directly proportional to x^4 When x = 1000, y = y1,
then find the value of x so that value of y can
be 2y1, ;
(1) 2000 (2) 1190 (3) 1410
(4) 4000​

Answer 1

I hope (1) will be ans of your question

x=1000 then y=y1

2y=2y1=2×1000=2000