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Mathematics 8 Online
OpenStudy (7thgrader):

Solve the given inequality and graph it on the number line. -3x + 9 < 15

OpenStudy (7thgrader):

@iGreen

OpenStudy (7thgrader):

you never finished helping me

OpenStudy (anonymous):

u left

OpenStudy (igreen):

-3x + 9 < 15 Subtract 9 to both sides

OpenStudy (7thgrader):

6x = 15

OpenStudy (igreen):

Um..no

OpenStudy (7thgrader):

o

OpenStudy (igreen):

-3x + 9 - 9 < 15 - 9

OpenStudy (7thgrader):

im lost sorry :(

OpenStudy (7thgrader):

HELP ME PLEASE! @kidrah69

OpenStudy (7thgrader):

help HELP HELP HELP!

OpenStudy (igreen):

9 - 9 = ?

OpenStudy (igreen):

15 - 9 = ?

OpenStudy (7thgrader):

0 and 6

OpenStudy (igreen):

Yes, so we have: -3x < 6 Divide -3 to both sides, 6 / -3 = ?

OpenStudy (igreen):

@7thGrader Can you do that?

OpenStudy (7thgrader):

yes on sec

OpenStudy (7thgrader):

-2

OpenStudy (igreen):

Yep, so we have: x > -2 Remember, we switch the sign when dividing/multiplying by a negative number.

OpenStudy (7thgrader):

is that the answer?

OpenStudy (7thgrader):

or what now i forgot how to do this sorry :/

OpenStudy (igreen):

Yes, it is

OpenStudy (igreen):

The graph will have an open dot on -2 and shade to the right.

OpenStudy (7thgrader):

k thx i was just making sure

OpenStudy (7thgrader):

so are you really 15?

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