Describe fully the single transformation that maps triangle A onto triangle B.

it takes 2/3 gallons to paint each square yard of wall.

You know that Tyler painted 9/2 square yards area with 3 gallons of paint and want to know many gallons of paint does it take to paint each square yard of wall.

Then 9/2 square yards - 3 gallons

1  square yards - x gallons,

mathematically this is proportion: (in the picture)