## Lilabon 2 years ago [3.05] Which of the following does not represent a function? x −12 −5 11 14 17 y −5 −2 −2 8 34 x −10 1 3 8 10 y −2 2 7 8 10 x 5 10 10 12 18 y 1 4 22 5 4 x 4 5 6 8 10 y 4 −4 12 −8 6

1. precal

plot your points and use the vertical line test

2. precal

|dw:1360028218239:dw|

3. precal

|dw:1360028235778:dw|

4. precal

|dw:1360028261287:dw|

5. precal

|dw:1360028290421:dw|NOT A FUNCTION

6. Lilabon

So the last one?

7. precal

|dw:1360028443906:dw|

8. precal

notice same x can not go to 2 different y values

9. Lilabon

So it's not the last one?

10. precal

last one is a function

11. precal

|dw:1360028741222:dw|I just graphed the last one for you and it passes the vertical line test

12. precal

|dw:1360028821861:dw|passes vertical line test since one vertical line does not cross 2 points at the same time

13. Lilabon

So it's the 3 rd one then?

14. precal

correct because of (10,4) and (10,22) that is the exact location that the vertical line test will fail

15. Lilabon

Thank You SOOOO MUCH,,,

16. precal

yw