Mathematics
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OpenStudy (anonymous):
whos in algebra 2????
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OpenStudy (anonymous):
@puledo_cat @Ghostboy2872 @Aya713
OpenStudy (anonymous):
algebra 1, sorryyyyyyy only 9th grade class i have
OpenStudy (anonymous):
its ok. im a ninth grader but ive already completed algebra 1 and geometry so im stuck in algebra 2
OpenStudy (anonymous):
dang lucky^
OpenStudy (anonymous):
i can help you out though my sister is in algebra 1 as well and i help her. what school do you go to?
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OpenStudy (anonymous):
I have integrated math 2
OpenStudy (anonymous):
do you think you can help me?? @puledo_cat
OpenStudy (anonymous):
depends what the question is but I'll give it a try
OpenStudy (anonymous):
what is an equation of the line with slope 3 that goes through point (-1/2,5/2)?
OpenStudy (anonymous):
so an equation for this is y=mx+b but we have to find out the constant which is b and we already have the slope which is m.
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OpenStudy (anonymous):
the slope is 3 so y=3x+b, but now we need to find out what b equals
OpenStudy (anonymous):
wouldnt b equal to 4?
OpenStudy (anonymous):
why do you think it equals 4?
OpenStudy (anonymous):
its just a saying i got taught if m is equal to 3 then b is equal to 4
OpenStudy (anonymous):
i think the answer is d
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OpenStudy (anonymous):
oh what you need to do is y=-1/2 and x=5/2 so -1/2=3(5/2)+b
OpenStudy (anonymous):
now we have to solve for b
OpenStudy (anonymous):
so -1/2=7.5??
OpenStudy (anonymous):
nope, first you have the equation right which is -1/2=3(5/2)+b so we start off by multiplying 3*5/2
OpenStudy (anonymous):
which equals 15/2 because 3 times 5 is 15 and 2 times 1 is 2 so 15/2
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OpenStudy (anonymous):
and 15/2 is 7.5
OpenStudy (anonymous):
is equal****
OpenStudy (anonymous):
yes but in this case we can use it as a fraction. After that we subtract -15/2 to both sides and you get -16/2
OpenStudy (anonymous):
so what is -16 divided by 2?
OpenStudy (anonymous):
-8?
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OpenStudy (anonymous):
yes so b is equaled to -8
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
but thats not an answer choice
OpenStudy (anonymous):
so y=3x-8
OpenStudy (anonymous):
thats not an answer choice
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OpenStudy (anonymous):
its ok i got the answer
OpenStudy (anonymous):
alright sorry I tried my best ;p