Determine Whether $\log _ { 4 } \frac { 4 x ^ { 9 } } { y }$

Short Answer

Determine whether $\log _ { 4 } \frac { 4 x ^ { 9 } } { y }$ is a solution of the system $1 + \log _ { 4 } 9 x - \log _ { 4 } y$