If a Plane Loses 1200 Feet in Altitude Over a Horizontal

Multiple Choice

If a plane loses 1200 feet in altitude over a horizontal distance of 9000 feet, what is the slope?

A) $\frac { 2 } { 15 }$
B) $- \frac { 2 } { 15 }$
C) $- \frac { 15 } { 2 }$
D) $\frac { 2 } { 17 }$