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Can someone please explain another approach to this problem? I haven't encountered this kind of question before. Thanks!
Life is a Test
maihuna wrote:mals24 wrote:A, B & C all have infinite length
D 2<|x|<5
This option will give you 2 line segments of finite lengths
-2>-x>-5
2<[/u]x<5
E 2<3x+4<6
This is the only option which will give you a single line of finite length. Just solve for x.
-2/3<x<2/3.
Hence the line is made of points that lie between -2/3 and 2/3.
Hope this helps.
HiMals,
to so;lve the inequality:
2<= |x| <=5
two steps:
|x| >=2 => x>= 2 or x<= -2
for |x|<=5 -5<x<5
So three lines two with infinite and one wit finite length will result.
OA is definitely E.
However I do not agree what you write for D.
I believe for D, shall be 2 line segments
a)-5 to -2 and
b)2 to 5
since x would be defined as the intersection of the lines( x<=-2 and x>=2 )AND (the line segment -5 to 5 )
