^-^ Help is very much needed, math isn't my strong suit.
What is the equation of the line expressed in slope-intercept form?
A.
y = 4x – 2
B.
y = –2x + 4
C.
y = 2x + 2
D.
y = –2x – 4
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OpenStudy (anonymous):
@pooja195
pooja195 (pooja195):
slop = y=mx+b wheres the line?
OpenStudy (anonymous):
pooja195 (pooja195):
ok where is the line hitting on the y axis?
OpenStudy (anonymous):
Uh, -4 I think
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pooja195 (pooja195):
yes so we have our y intercept now what about x where is the line hitting?
OpenStudy (anonymous):
-2
pooja195 (pooja195):
good so -4 is the y intercept and -2 is the x intercept now plug it in! y=mx+b
OpenStudy (anonymous):
I'm confused :/
pooja195 (pooja195):
ok X intercept is -2 where does it fit in y=mx+b?
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OpenStudy (anonymous):
Uhhh... y=m-2+b??
pooja195 (pooja195):
nope your making it harder than it needs to be ok\[y=mx+b\] this is the slop intercept equation got it?
OpenStudy (anonymous):
Okay.
pooja195 (pooja195):
so X intercept which is -2 you would plug in place of M so what does your equation look like? once you plug in the numbers?
OpenStudy (anonymous):
y=-2x+4
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pooja195 (pooja195):
omg your so close!!! remeber its -4 try again :) you're almost there
pooja195 (pooja195):
do you know?
OpenStudy (anonymous):
y=-2x+-4
OpenStudy (anonymous):
Is it D?
pooja195 (pooja195):
take out the + sign and yep! well done!! :D
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OpenStudy (anonymous):
Thank you again!
pooja195 (pooja195):
Hahah no probs :)
OpenStudy (ashleyisakitty):
For the reference:
Slope-intercept:\[y=mx+b\]
Point slope: \[y-y _{1}=m(x-x _{1})\]
RAO or slope: \[m=\frac{ y _{2}-y _{1} }{ x _{2}-x _{1} }\]