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Mathematics 8 Online
OpenStudy (anonymous):

What is the slope of the line? @Babynini

OpenStudy (anonymous):

What is the slope of the line?

OpenStudy (babynini):

okies, so you want to isolate y on one side. We did this in the equation of finding a so how do we do that?

OpenStudy (babynini):

6x +2y=-14 Take away 6x from both sides 2y=-6x-14 then divide both sides by 2 = ?

OpenStudy (anonymous):

here are the options 3 −3

OpenStudy (babynini):

Do the division on the equation I just gave you :)

OpenStudy (anonymous):

so i should divide 2/6 right

OpenStudy (babynini):

\[y=\frac{ -6 }{ 2 }-\frac{ 14 }{ 2 }\]

OpenStudy (anonymous):

that will make 0.3

OpenStudy (babynini):

(oops! forgot the x after 6.

OpenStudy (babynini):

-6x/2 = ?

OpenStudy (anonymous):

oh -3

OpenStudy (anonymous):

-6x/2= -3

OpenStudy (babynini):

yep and 14/2?

OpenStudy (babynini):

so y = -3x-7

OpenStudy (anonymous):

14/2=7

OpenStudy (babynini):

exactly! so now we have it in correct form. The slope is = ?

OpenStudy (anonymous):

3

OpenStudy (babynini):

noo your equation is y=-3x-7 remember that a includes the negative.

OpenStudy (anonymous):

-3 right lol

OpenStudy (babynini):

yup :)

OpenStudy (anonymous):

:) yaya me lol and u

OpenStudy (anonymous):

Which ordered pair is a solution to the inequality?

OpenStudy (babynini):

What are your options? :)

OpenStudy (anonymous):

(−15, 3) (6, 3)

OpenStudy (babynini):

Sorry, it kicked me off :o

OpenStudy (babynini):

so now plug those into the equation you're given to see which is true :)

OpenStudy (anonymous):

yea i got kicked off to it took me a little while to get back on

OpenStudy (anonymous):

what do i do now

OpenStudy (babynini):

ok so you have two options (-15,3) and (6,3) you know that these are in the order (x,y) yeah?

OpenStudy (anonymous):

yea

OpenStudy (babynini):

\[-\frac{ 2 }{ 3 }x-y>0\]

OpenStudy (babynini):

plug option a (-15,3) in to that equation and it will look like \[-\frac{ 2 }{ 3 }*(-15)-3>0\]

OpenStudy (babynini):

Solve that, does it come out true?

OpenStudy (babynini):

So, is the left hand side larger than the 0? :)

OpenStudy (anonymous):

yes it is larger then 0 and...

OpenStudy (anonymous):

y<−x/6

OpenStudy (babynini):

Yep, so the answer is (-15,3) :)

OpenStudy (anonymous):

:) yay we did it

OpenStudy (babynini):

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