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OpenStudy (hypersniper445):
@sleepyjess
OpenStudy (hypersniper445):
i can choose more than one
OpenStudy (mehek.15):
y = mx + b
m = slope
b = y-intercept
so if 9/4 is slope and -14 is yintercept
what equation
OpenStudy (hypersniper445):
how do i find that
OpenStudy (mehek.15):
well your problem says 9/4 is the slope so put that for m
y = 9/4x + b
the y-intercept is -14
put that for b
y = 9/4x - 14
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OpenStudy (hypersniper445):
so C
OpenStudy (mehek.15):
so that means C is one answer
now we need to see if the others are correct as well
OpenStudy (hypersniper445):
D can't be correct because it is positive
OpenStudy (mehek.15):
so either A or B
OpenStudy (hypersniper445):
A?
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OpenStudy (mehek.15):
yes A
so A and C are the answers
OpenStudy (hypersniper445):
do you have time for more?
OpenStudy (mehek.15):
sure
OpenStudy (hypersniper445):
A line has a slope of 3 and contains the point (−1, −8).
Which equations represent the line?
Choose all answers that are correct.
A.
−3x + y = −5
B.
3x + y = −5
C.
(y – 8) = 3(x − 1)
D.
(y + 8) = 3(x + 1)
OpenStudy (mehek.15):
you can plug in the ordred pair and see which ones are true
put -1 for x and 8 for y
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OpenStudy (hypersniper445):
A?
OpenStudy (mehek.15):
ye A is true
any others?
OpenStudy (hypersniper445):
D?
OpenStudy (mehek.15):
ye D is correct as well
OpenStudy (hypersniper445):
i think that is it
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OpenStudy (mehek.15):
so A and D
OpenStudy (hypersniper445):
this one will come in parts
OpenStudy (hypersniper445):
OpenStudy (mehek.15):
first ,
is the slope positive or negative?
OpenStudy (hypersniper445):
positive
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OpenStudy (mehek.15):
so positive slope = line goes up
OpenStudy (hypersniper445):
they are all positive
OpenStudy (mehek.15):
oke so since all are positive, look for the y-intercept
OpenStudy (hypersniper445):
So A or D since they both intercept y= -2
OpenStudy (mehek.15):
right so it can be o
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OpenStudy (mehek.15):
one of those
OpenStudy (hypersniper445):
I think it is D
OpenStudy (mehek.15):
now we look at the slope of both of them
OpenStudy (mehek.15):
well lets see if D is correct
OpenStudy (hypersniper445):
okay
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OpenStudy (mehek.15):
using
(3,-1) and (0,-2)
\(\dfrac{-2-(-1)}{0-3}=\dfrac{-1}{-3}=\dfrac{1}{3}\)
so D it is
OpenStudy (hypersniper445):
okay thats what i thought
OpenStudy (hypersniper445):
OpenStudy (mehek.15):
which one do you think?
OpenStudy (hypersniper445):
C
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OpenStudy (mehek.15):
ye C is corrct
OpenStudy (mehek.15):
I gtg
OpenStudy (hypersniper445):
oh okay. i have to ask, are you like an alt account of Mehek14? because there is no way you are this smart with only 10 smart score