Select the correct answer.
Which of these graphs represents a function?
A diagonal curve rises through (negative 5, negative 2), (negative 3, 0), (negative 2, 1), (0, 3), (1, 4), (2, 5) and (3, 6) on the x y coordinate plane.
W. A vertically linear curve descends through (5, 5), (5, 4), (5, 3), (5, 2), (5, 1), (5, 0), (5, negative 1), (5, negative 2), (5, negative 3), (5, negative 4) and (5, negative 5) on the x y coordinate plane.
X.
A curve declines from (negative 5, 6) through (4, 4), further declines through (0, 3), and turns and declines through (5, 2) on the x y coordinate plane.
Y. A curve declines diagonally from (3, 6) through (negative 2, 1) and further declines through (2, negative 3, (3, negative 4), and (5, negative 6) on the x y coordinate plane.
Z.
A.
W
B.
X
C.
Y
D.
Z
