(1,4) this is because the flip over y axis does not touch the y value but gives the opposite of the x value
yards/costumes:16/(5/2) = X/(19/2)
Cross multiply.
(5/2)x = 152
Multiply both sides by 2/5.
x = 101 1/3 yards
A. sandwiches per hours is 4.5/hour
b. hours per sandwich is 0.33/sandwich