Question

Which point lies on the graph of the piece wise function y = –x if x < 0 y = x2 + 1 if x 0?
(–1, 2)
(1, 0)
(–2, 2)
(0, –1)

Answer 1

-2<0 and 2=-(-2)

Answer 2

only 1 x > 0 and it does not work

Answer 3

hmm should be the second option as have no condition given for x>1

Answer 4

I think the end of his question is x>0

Answer 5

or x>=0 either way (-2,2) works

Answer 6

hmm i asked him he said it's x = 0

Answer 7

then again (-2,2) is the only one that works

Answer 8

Which point lies on the graph of the following piecewise function?
y = –x if x < 0
y = x2 + 1 if x 0

Answer 9

hmm true..

Answer 10

Which point lies on the graph of the following piecewise function?
y = –x if x < 0
y = x2 + 1 if x greater than or equal to 0

Answer 11

thats the exact question

Answer 12

only b) works

Answer 13

well still the same answer as @zzr0ck3r mentioned.

Answer 14

so 1,0?

Answer 15

(-2,2)

Answer 16

IT WAS RIGHT! Thanks a million.

Answer 17

do you see what we did?
y = –x if x < 0 y = x2 + 1 if x 0?
(–1, 2)
(1, 0)
(–2, 2)
(0, –1)
so we look at the x values, like for the first one, x =-1 so it is <0 so we apply the first equation and it does not make sense because y=-x and x=-1 but y =2 not -x=1
we do that for each pair, checking the x value, finding out what equation to look at, and then see if it makes sense. with (-2,2) since x=-2<0 we look at the first equation y=-x and sure enough y=2=-x=-(-2)