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Mathematics 9 Online
OpenStudy (anonymous):

can i get some help with my algebra homework i just would like to know how to do it thanks

OpenStudy (anonymous):

how do i solve -4+x>-2and graph it on a number line?

OpenStudy (dape):

Inequalities are solved like equations, but you have to be careful since sometimes the > and < is swapped. For example, 4 > 2, but if we multiply by a negative number such as -1 we have -4 < -2. When adding or subtracting on both sides, you don't have to worry about this. Now, if we add 4 to both sides of your inequality we get \( x>-2+4 \) or \(x>2.\)

OpenStudy (anonymous):

i have 6 more but id like to try them myself can you tell me how i can do this

OpenStudy (anonymous):

how would i graph it ?

OpenStudy (dape):

To graph this, just think about where numbers that solve \(x>2\) are located. Solutions to this are all numbers bigger than 2, so draw a number line and make a mark on the line to the right of 2 somehow.

OpenStudy (anonymous):

|dw:1377474727511:dw| like that ???

OpenStudy (dape):

Yeah, that's great.

OpenStudy (dape):

You can have a little (not filled) circle around 2 which means that all numbers close to 2 but not 2 are solutions. A filled circle would mean that 2 also is a solution.

OpenStudy (ajoy31):

|dw:1377474807150:dw| You have to add the open circle to show that x is not equal to 2

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