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Mathematics 9 Online
OpenStudy (vera_ewing):

Math problem

OpenStudy (vera_ewing):

@jim_thompson5910 It's A right?

jimthompson5910 (jim_thompson5910):

how did you get to A?

OpenStudy (vera_ewing):

I plotted it using Mathway

jimthompson5910 (jim_thompson5910):

if you were to plug x = 5 into the first piece, what would you get?

OpenStudy (vera_ewing):

17?

jimthompson5910 (jim_thompson5910):

so (5,17) is where the open hole is on the left piece it's an open hole because of the \(\Large <\) sign (there is no line under the inequality sign)

jimthompson5910 (jim_thompson5910):

plug x = 5 into the second piece and you get ???

OpenStudy (vera_ewing):

-17

jimthompson5910 (jim_thompson5910):

yes, which means (5,-17) is the location of that closed circle at the endpoint of the right half piece

OpenStudy (vera_ewing):

So it would be B?

jimthompson5910 (jim_thompson5910):

yes because A looks like the open circle is below y = 5, so there's no way it can be at (5,17)

OpenStudy (vera_ewing):

Ok, thanks.

jimthompson5910 (jim_thompson5910):

no problem

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