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Mathematics 19 Online
OpenStudy (anonymous):

Choose the correct description of the graph of the inequality -2x > 10. Open circle on -5, shading to the left. Closed circle on -5, shading to the left. Open circle on -5, shading to the right. Closed circle on -5, shading to the right.

OpenStudy (anonymous):

@richyw

OpenStudy (richyw):

I just explained how to do this!

OpenStudy (anonymous):

oh sorry xD

OpenStudy (richyw):

for \(\leq\) or \(\geq\) you want a closed circle, for \(<\) or \(>\) you want an open circle

OpenStudy (richyw):

now just solve for x

OpenStudy (anonymous):

so x > 10

OpenStudy (anonymous):

5** not 10

OpenStudy (richyw):

what happened to your negative?

OpenStudy (anonymous):

oh sorry. so it is x > -5, open circle, and how do i find the left or right and shading?

OpenStudy (richyw):

you have to be careful with negatives here

OpenStudy (richyw):

it will flip the sign

OpenStudy (anonymous):

so it is x< -5?

OpenStudy (richyw):

http://www.wolframalpha.com/input/?i=-2x%3E10

OpenStudy (richyw):

sorry I have to run!

OpenStudy (richyw):

that has your solution and the number line!

OpenStudy (anonymous):

okay thank you!

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