We identify surfaces.

Work in groups of 3–4, writing your answers on a separate sheet of paper.

Match the following functions to the level curves.

(a)
(b)
(c)
(d)
(e)
(f)
(i)
PIC
(ii)
PIC
(iii)
PIC
(iv)
PIC
(v)
PIC
(vi)
PIC