Alyssa is helping to set up drinks and snacks for a luncheon. Alyssa has 4.5 liters of lemonade to pour into pitchers. Each pitcher holds 0.9 liter of lemonade. If Alyssa pours an equal amount of lemonade into each pitcher, how many pitchers does she fill?

Alyssa drew the model below to show how many pitchers she fills.

The grids represent the amount of lemonade that Alyssa has. The lines represent Alyssa's division.

Answer in at least 2 complete sentences.

Is Alyssa's model correct?
Explain how do you know?