Compute the Indicated Derivative Using the Chain Rule $y = 7 x + 10 ; \frac { \mathrm { d } x } { \mathrm {~d} y }$

Multiple Choice

Compute the indicated derivative using the chain rule. $y = 7 x + 10 ; \frac { \mathrm { d } x } { \mathrm {~d} y }$

A) $\frac { 1 } { 10 }$
B) $- \frac { 7 } { 10 }$
C) $\frac { 1 } { 7 }$
D) 7
E) -10