Sharon is rowing a boat upstream. The river is flowing at a speed of 3 miles per hour. Sharon starts rowing at a speed of 8 miles per hour, but as she gets tired her speed decreases (at a rate of 1.5 miles per hour, every hour). Graph the equation that fits the description, where y represents Sharon's speed and x represents the time elapsed since the start of her workout.

x represents the elapsed time in hours.y represents the speed in miles per hour.

the equation:  y = -1.5 * x + 8 
the equation to model this is y = -1.5 * x + 8 - 3 
simplify this to get y = -1.5 * x + 5. 

She will be traveling at a net speed of 0 miles per hour in 3 and 1/3 hours. 

The graph is the attached photo.