Learning objectives

• Represent functions of two variables with contour diagrams and tables of values
• Tell the story told by a contour diagram
• Recognize linear functions of 2 variables presented in numerical, algebraic, and graphical forms

Before class

• Read Hughes-Hallett 9.1 – 9.2.
• Ponder problems 9.1.1,2,4,12,16; 9.2.2,16,18,22,24.
• Consult the main points of the lesson.
• Find a cool contour diagram on the internet and post it on the Piazza forum.

In class

• Contour diagrams in real life together with student generated examples.
• Create formulas from linear tables and linear contour diagrams.
• Create contours from big table of values, here and here.
• Contour diagrams using R