x y

0

1

2

3

4

5

x y

0

1

2

3

4

5

x y

0

1

2

3

4

5

x y

0

1

2

3

4

5

x y

0

1

2

3

4

5

x y

0

1

2

3

4

5

To get y…

To get y…

To get y…

To get y…

To get y…

To get y…

12 xy23 xy

621 xy

6 xy23 xy

42 xy