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Mathematics 7 Online
OpenStudy (anonymous):

Help

OpenStudy (anonymous):

OpenStudy (anonymous):

@FFASinger

OpenStudy (ffasinger):

I think C . But don't count on it

OpenStudy (welshfella):

Do you know what the vertical lines around ax - b mean?

OpenStudy (knov):

We know that C is a real number and C>0.

OpenStudy (knov):

which is |ax-b| is a positive integer.So it can't be |ax-b|<-c. And we also know that D and C are not the answers since it;s obvious.

OpenStudy (anonymous):

it would be B because the signs have to be going the same direction

OpenStudy (knov):

think about it. can ax-b be > than C and < than C at the same time ?

OpenStudy (knov):

-C*

OpenStudy (knov):

we are looking for an inequality to |ax-b|>C

OpenStudy (welshfella):

ax - b can be negative because we have the absolute value here |ax - b|

OpenStudy (knov):

ax-b can't be negative since c>0

OpenStudy (knov):

and ax-b>C

OpenStudy (anonymous):

it was D

OpenStudy (welshfella):

just as an exercise use |2x - 1! > 3 and see which of the options fit the numbers

OpenStudy (welshfella):

yes D is correct

OpenStudy (knov):

@FaiqRaees i don't get you.

OpenStudy (welshfella):

2x - 1> 3 gives 2x > 4 x . 2 2x - 1 < -3 gives 2x < -2 x < 1 if you check bak you#ll see that fits the original equality |2x - 1| > 3

OpenStudy (knov):

|dw:1459527368049:dw|

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