$$\text { Explain how the graph of } y = \log _ { 2 } \frac { x } { 7 } \text { can be obtained from the graph of } y = \log _ { 2 } x \text {. }$$

Essay

$$\text { Explain how the graph of } y = \log _ { 2 } \frac { x } { 7 } \text { can be obtained from the graph of } y = \log _ { 2 } x \text {. }$$