Write an equation that describes how the value of [[$ y $]] depends on the value of [[$ x $]].

a)

x	y
2	4
3	6
4	8
5	10

Answer: The equation is y = .

b)

x	y
0	1
1	2
2	3
3	4

Answer: The equation is =

c)

x	y
1	3
2	5
3	7
4	9

Answer: The equation is y = .