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

Question

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

australopithecus · Answer

To test to see if an equation is a function we use the vertical line test
which is simply a test that is done by drawing a vertical line anywhere on the graph of the function, if it is possible to draw a line vertically that passes the line of the function more than once the equation is not a function.

A function
|dw:1339346846782:dw|

Not a function
|dw:1339346910102:dw|

anonymous · Answer

i really need help in this im not that good in math

australopithecus · Answer

Wow Copy drawing function isn't working for me anymore.

Applying the vertical line test


|dw:1339347050502:dw| 
No matter where I draw a line a vertical line on this graph it will 
only pass through the function once thus it confirms that it is a function Thus it passes the vertical line test

|dw:1339347112437:dw|
A vertical line can pass through this function more than once thus it is nto a function, it fails the vertical line test.