Question

whats the discontinuity of the function x^2-3x-28/x+4

Answer 1

Remember that rational functions are continuous *on their domain* so your best bet is finding values of x which are not in the domain ^_^

Answer 2

we are trying to find the points

Answer 3

<shrugs> points correspond to values of x.
So come now, a subtle hint :)
There is one value of x which is not 'allowed' so to speak... what I mean is, if you plug it into your function, you get something undefined, do you know what that value is?

Answer 4

-4?

Answer 5

That's it :D

Answer 6

also could it be -11?

Answer 7

lol, my teacher would say: are you asking me if its 4, or telling me that its 4 :)

Answer 8

How do you get -11? D:

Answer 9

im coming from answer choices.

Answer 10

input x = -11, see if you get something that is undefined, or defined

Answer 11

I'd rather not rely on the choices if I can help it ^_^
Come on, I have faith in you, try figuring out for yourself whether x = -11 is in the domain by plugging it in... if you get a value, then it IS in the domain, ok?

also amistre, that teacher's mean >:(

Answer 12

It may be my instincts kicking in, but somehow, I imagine it to be followed by a question asking you to classify the discontinuity... but more on that later... have you come to your conclusion @raerae42698 ?

Answer 13

it is asking for the discontinuities of that function and i believe its -4 and -11
am i correct

Answer 14

@terenzreignz

Answer 15

No :)

Answer 16

i got it right!
the discontinuities of that function are -4 and -11

Answer 17

:)

Answer 18

Well that can't be right...
heh...
interesting...

Answer 19

i take an online class. like distance learning and i was on a quiz and it says i got it right but, in your defense i got a problem right last night and they counted it wrong.