Aubree and her children went into a movie theater and she bought $32 worth of bags of popcorn and pretzels. Each bag of popcorn costs $8 and each pretzel costs $4. She bought a total of 6 bags of popcorn and pretzels altogether. Graphically solve a system of equations in order to determine the number of bags of popcorn,
x
,
x, and the number of pretzels,
y
,
y, that Aubree bought.