Question

If x varies y and y = 8 when x=2, then if y = 16, what will be the value of x'.​

Answer 1

Answer:

4

1st explanation

y=8×2=16

x=2×2=4

so the answer is 4

2nd explanation

x prop y rArr x=ky

x prop y rArr x=ky(where k= non zero constant )…..(i) <br> Given that y=8 when x =2 .<br>

x prop y rArr x=ky(where k= non zero constant )…..(i) <br> Given that y=8 when x =2 .<br>therefore 2 =k xx8rArr2/8=1/4

x prop y rArr x=ky(where k= non zero constant )…..(i) <br> Given that y=8 when x =2 .<br>therefore 2 =k xx8rArr2/8=1/4<br>

x prop y rArr x=ky(where k= non zero constant )…..(i) <br> Given that y=8 when x =2 .<br>therefore 2 =k xx8rArr2/8=1/4<br>therefore

x prop y rArr x=ky(where k= non zero constant )…..(i) <br> Given that y=8 when x =2 .<br>therefore 2 =k xx8rArr2/8=1/4<br>thereforeform (1) we get ,

x prop y rArr x=ky(where k= non zero constant )…..(i) <br> Given that y=8 when x =2 .<br>therefore 2 =k xx8rArr2/8=1/4<br>thereforeform (1) we get ,x =1/4 y …….(2)

x prop y rArr x=ky(where k= non zero constant )…..(i) <br> Given that y=8 when x =2 .<br>therefore 2 =k xx8rArr2/8=1/4<br>thereforeform (1) we get ,x =1/4 y …….(2)<br> putting y =16 in (2) we get , x

x prop y rArr x=ky(where k= non zero constant )…..(i) <br> Given that y=8 when x =2 .<br>therefore 2 =k xx8rArr2/8=1/4<br>thereforeform (1) we get ,x =1/4 y …….(2)<br> putting y =16 in (2) we get , x1/4 xx16or , x=4

x prop y rArr x=ky(where k= non zero constant )…..(i) <br> Given that y=8 when x =2 .<br>therefore 2 =k xx8rArr2/8=1/4<br>thereforeform (1) we get ,x =1/4 y …….(2)<br> putting y =16 in (2) we get , x1/4 xx16or , x=4<br>