What system of linear inequalities is shown in the graph?
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a farmer that lived in ancient egypt would most likely be barried in the sand, in the desert!

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1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x