Mathematics
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OpenStudy (anonymous):
What is the slope of the line?
@Babynini
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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 :)
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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 = ?
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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
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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 :)
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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
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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
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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...
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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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