Chapter 6 - Systems of Equations and Inequalities - 6-4 Applications of Linear Systems - Lesson Check - Page 390: 3

The bird’s air speed: 2.25 mi/h The bird’s wind speed: 0.75 mi/h

Let x be the bird’s air speed and y be the bird’s wind speed. We have the system: $x+y=3$ $x-y=1.5$ Use elimination to solve the system $x+y=3$ $x-y=1.5$ ______________ $2x=4.5$ $x=2.25$ $\rightarrow y=0.75$