A boa constrictor is 18 inches long at birth and grows 8 inches per year. Write an equation that represents the length y (in feet) of a boa constrictor that is x years old.
+37084 y= = length
x = years 8 inches per year is 8/12 FEET per year
18 = constant (length at birth) in FEET 1.5 feet
y = 8/12 x + 1.5 = 2/3 x + 1.5 (recognize y = mx + b form of a line?)
