Question

If ax = by, then:
A.log a/b = x/y
B.log a/log b = x/y
C.log a/log b = y/x
D.None of these

Answer 1

$<b><font size = "4">$(^_-)(^_-)(^_-)(^_-)(^_-)(^_-)(^_-)(^_-)(^_-)
╭╼╾╼╾╼╾╼╾╼╾╼╾╼╾╮
┃ ┈┈ [_Hɪ Mᴀᴛᴇ_] ┈┈┈ ┃
╰╼╾╼╾╼╾╼╾╼╾╼╾╼╾╯

╔═══❁═❀═✪═❀═❁════╗
......Here You Go Ur Answer......
╚═══❁═❀═✪═❀═❁════╝

ıllıllıllıllıllıllı[ Your Answer ]ıllıllıllıllıllıllı

◆━━━━━◆♤◆━━━━━◆
☆Correct | ♤ | Option☆
◆━━━━━◆♤◆━━━━━◆

[B] $\bf {\underline{Answer}}$

$<marquee>$

▂▃▅▇█▓▒░[ Hope It Helps You Dear ]░▒▓█▇▅▃▂

Answer 2

Taking log both sides,
log =log 
or, xloga=ylogb
or, loga/logb=y/x 
Answer is C.