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Mathematics 8 Online
OpenStudy (anonymous):

] -2y - 7 > 11 Part 1: Solve the inequality above. Part 2: Describe the graph of the solution.

OpenStudy (anonymous):

Did you mean: \[-2y-7>11\] or was the "]" character in front supposed to be something else?

OpenStudy (anonymous):

Either way, an inequality is solved just like an equation except that if you multiply or divide by a negative, you will reverse the inequality.

OpenStudy (anonymous):

yea sorry your right -2y - 7 > 11

OpenStudy (anonymous):

If this were an equation, would you know how to solve it?

OpenStudy (anonymous):

no can you show me

OpenStudy (anonymous):

You want to isolate the variable so the first step would be to get the y term on the left side and the constants on the right side.

OpenStudy (anonymous):

wpuld it be this -2y - 7 > 11 now add 7 to both sides -2x > 18 now divide by -2changing the sign y < -9

OpenStudy (anonymous):

Yes, that is exactly it.

OpenStudy (anonymous):

Now graph the inequality so you can see what it looks like.

OpenStudy (anonymous):

ok so what would the graph look like

OpenStudy (anonymous):

Are you graphing on a number line or a coordinate grid?

OpenStudy (anonymous):

number line

OpenStudy (anonymous):

OK. Draw your number line with numbers from 0 to -10. Remember that greater than or less than is indicated with an open circle.

OpenStudy (anonymous):

ok then what

OpenStudy (anonymous):

can you draw out what it wouyld look like

OpenStudy (anonymous):

Your equation is y=-9 so you would start with an open circle at -9.

OpenStudy (anonymous):

ok then what

OpenStudy (anonymous):

what way would the shading go?

OpenStudy (anonymous):

|dw:1375461015505:dw|

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