rootbeer003:
help
satellite73:
boo
rootbeer003:
harro
satellite73:
hope it is easy algebra day...
rootbeer003:
me too
satellite73:
whoa i have no idea let's google
rootbeer003:
lol
satellite73:
the only question was whether they were rows or columns i would say each point is a column, go with B can you check it?
satellite73:
you can't check?
satellite73:
oh nvm from the next question it is clear that they are columns
satellite73:
your answer is correct
rootbeer003:
so both correct
satellite73:
yes i would say the second one is correct for sure
satellite73:
seems right also
satellite73:
i wish i was smarter seems like B is the only choice though
satellite73:
i mean it works
satellite73:
that cant be right
rootbeer003:
ignore my choice
satellite73:
the matrix on the right has to look like one of the first two, A or B then we can see which one does it do you know how to do matrix multiplication?
rootbeer003:
no
satellite73:
lol than this can't make any sense at all to you go with A
satellite73:
\[5\times 9-2\times 6\] for the first one
satellite73:
\[-4\times -6-2\times -5\] for the second
satellite73:
i get 33 for the first one
rootbeer003:
a and b
satellite73:
for the last you posted, has to be one of the first three we just need the numerator
satellite73:
replace the x's by 5,7 you get B
satellite73:
has to be one of the first three now we need the numerator
satellite73:
replace the y's by 2, -22, get A
satellite73:
i am beginning not to like you... must be B or C
satellite73:
give me a second
satellite73:
it is really not that hard, but very hard to write here i would go with B you need an explanation?
rootbeer003:
no
satellite73:
ok good
rootbeer003:
um
satellite73:
first one is right
satellite73:
second one is right too
satellite73:
first one is right
satellite73:
second one \[x=\pm\sqrt8=\pm2\sqrt2\]
satellite73:
yes
satellite73:
lol no frickin idea what any of that means
satellite73:
oh, but i am pretty sure you are right on the first one
rootbeer003:
its fine lets do something dif
satellite73:
definitely right on #3
satellite73:
\(\sqrt{74}\) is right
satellite73:
first one is right
satellite73:
second one is right too
satellite73:
yup
satellite73:
\[\checkmark\]
satellite73:
yeah they really stretch for these "word problems' don't they you are right
satellite73:
\[\huge\color{red}\checkmark\]
satellite73:
idk either A or D without doing any work, because the y term has to come first
satellite73:
without doing too much work, it looks like the center is \((3,-1)\) which would make it \[(y+1)^2-(x-3)^2\]
rootbeer003:
a?
satellite73:
we done yet
rootbeer003:
c
satellite73:
yes
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