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Mathematics 7 Online
OpenStudy (odysseus_12345):

help please

OpenStudy (odysseus_12345):

OpenStudy (loser66):

your idea?

OpenStudy (odysseus_12345):

my idea was -9/1, for the equation, but was proven wrong

OpenStudy (loser66):

What is the slope point equation of a line?

OpenStudy (odysseus_12345):

y=mx+b

OpenStudy (loser66):

yup, how to find m?

OpenStudy (odysseus_12345):

with the two points for the equation y-y2/x-x2

OpenStudy (loser66):

yes, so, your m =???

OpenStudy (odysseus_12345):

my m is 9/-3

OpenStudy (loser66):

=?

OpenStudy (odysseus_12345):

m=-3

OpenStudy (loser66):

yuuuuuuuuuuuup

OpenStudy (loser66):

Now, replace that m back to y = mx +b, you have y = -3x +b, right?

OpenStudy (odysseus_12345):

yes

OpenStudy (loser66):

You have 2 points, pick one of them, just one. which one do you want to pick?

OpenStudy (odysseus_12345):

-2,7

OpenStudy (loser66):

That means x =-2, y =7, right?

OpenStudy (loser66):

from y = -3x +b add 3x both sides, what do you get?

OpenStudy (odysseus_12345):

3x+y=b

OpenStudy (loser66):

perfect, now replace x =-2, y =7 into it, what do you get for b?

OpenStudy (odysseus_12345):

1

OpenStudy (loser66):

YYYes

OpenStudy (loser66):

so far, your m =-3, your b =1 plug all in y =mx +b, what do you get?

OpenStudy (odysseus_12345):

so it would be y=3x-2

OpenStudy (loser66):

Come on!! redo

OpenStudy (odysseus_12345):

it has to be in slope-intercept form

OpenStudy (loser66):

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