OpenStudy (imamermaid29):

Determine which relation is a function. a. https://static.k12.com/calms_media/media/243000_243500/243030/1/9d7da95c78918ed75d524e4f6b201e4bd131428e/VHS_ALG_S2_01_L203_L303_LQ_3A.gif b. https://static.k12.com/calms_media/media/243000_243500/243033/1/07d0ffef1f4e6f4dfc7e2b0a6b695877fa43eaf8/VHS_ALG_S2_01_L203_L303_LQ_3D.gif c. https://static.k12.com/calms_media/media/243000_243500/243031/1/94ac2108bcc0ae61962be36204df63047b8127d6/VHS_ALG_S2_01_L203_L303_LQ_3B.gif d. https://static.k12.com/calms_media/media/243000_243500/243032/1/374682ee8625ec2ab7a388df8263fac6f38c3313/VHS_ALG_S2_01_

1 year ago
OpenStudy (imamermaid29):

@welshfella please help

1 year ago
OpenStudy (anonymous):

To be a function it has to pass the vertical line test

1 year ago
OpenStudy (anonymous):

So there shouldn't be more than 1 x-value to a y-value

1 year ago
OpenStudy (welshfella):

Apply the vertival line test, If you can draw a vertical line which passes through the graph more than once then its NOT a function.

1 year ago
OpenStudy (welshfella):

The vertical line can also be the y-axis itself. If the graph itself is vertical then its passes through infinite teims so it not a function.

1 year ago
OpenStudy (imamermaid29):

is this a?

1 year ago
OpenStudy (welshfella):

a cant be a function as its avertical line.

1 year ago
OpenStudy (anonymous):

No a is vertical line in itself so it cannot pass the vertical line test, try and find one where if you draw a vertical line it doesn't intersect with anything more than once

1 year ago
OpenStudy (welshfella):

I cant see option d but one of b and c is a function.

1 year ago
OpenStudy (imamermaid29):

would this be b?

1 year ago
OpenStudy (welshfella):

can you draw a vertical line which pass through the curve b more than once?

1 year ago
OpenStudy (imamermaid29):

no.

1 year ago
OpenStudy (welshfella):

|dw:1450127159215:dw|

1 year ago