Make a table showing several values of length and width?

Question

Make a table showing several values of lenthg and width of a rectangle whose perimeter is 12 inches. Make a scattered plot of the data. Draw a curve that shows the overall pattern of the data. Predict the width of a rectangle when the length is 3.5 inches

Answer 1

l w
3 3
4 2
5 1

3.5 2.5

It's a diagonal line.