Chapter 1.1, Problem 41E

What does it mean when we say that two lines are parallel?

A farmer finds there is a linear relationship betweenthe number of bean stalks, n, she plants and theyield, y, each plant produces. When she plants 30stalks, each plant yields 30 oz of beans. When sheplants 34 stalks, each plant produces 28 oz of beans.Find a linear relationship in the form y=mn+b that gives the yield when n stalks are planted.

Measurement Use the fact that 13 inches is approximately the same length as 33 centimeters to find a mathematical model that relates centimeters y to inches x. Then use the model to find the numbers of centimeters in 10 inches and 20 inches.