veeebeetwee
sum1 help with my test asap
Write the equation of a line in slope-intercept form that has a slope of -2 and passes through the point (2, -8). (Points : 2)
y = -2x - 4
y = -2x - 8
y = -2x + 18
y = -2x – 12
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veeebeetwee
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@Dido525
Dido525
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Helping you on a test is something we cannot do here.
veeebeetwee
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its not relly test but its long like a test i jus thought if i sid test ppl wouldctuallly help me
veeebeetwee
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@Dido525
veeebeetwee
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@AriPotta heyycan u help plz
veeebeetwee
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@AccessDenied can u help please
AriPotta
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put the information into pint-slope form first
AriPotta
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point-slope*
veeebeetwee
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y=mx+b?
AriPotta
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that's slope-intercept form
AriPotta
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point-slope is y - y1 = m(x - x1)
AriPotta
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what do you get after putting the info in?
veeebeetwee
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so y-8=-2(x-2)?
AriPotta
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y + 8 = -2(x - 2)
veeebeetwee
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y+8=-2x+4?
AriPotta
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yes, and now "solve for y" to get it into slope-intercept form
veeebeetwee
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my bad -
AriPotta
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what did you do wrong?
veeebeetwee
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oh nvm so it would = y=-2x-4 bc u add 8
AriPotta
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yes
veeebeetwee
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ok wat about this one Rewrite the equation of a line in point-slope form to slope-intercept form:
veeebeetwee
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veeebeetwee
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@AriPotta
AriPotta
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no need to tag me, i'm right here ;)
veeebeetwee
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:)
AriPotta
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right now it's in point-slope form. so do the same thing we did to the last one for this one
veeebeetwee
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y-3 wait its a fraction idk wat to do those confudse me
AriPotta
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for the last one, we distributed, correct? just do the same thing with this one. 1/2 times x is 1/2x and 1/2 times -8 is..?
veeebeetwee
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1/2-8?
AriPotta
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no. :/ what's half of 8?
veeebeetwee
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oh 4
AriPotta
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-4
veeebeetwee
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oh yea
AriPotta
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continue.
veeebeetwee
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=1/-2?
AriPotta
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ok. let's take this by steps starting with what we started with
y - 3 = 1/2(x - 8)
y - 3 = 1/2x - 4
AriPotta
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we need to continue to get into slope-intercept
AriPotta
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one step left
veeebeetwee
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+3 n +3
so y=1/2+1
veeebeetwee
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-1!
AriPotta
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yes, y = 1/2x - 1
veeebeetwee
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ok wat about this one now
2. Write the equation of a line in slope-intercept form passing through (4, 5) and (6, 8)
AriPotta
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make a new question thread
AriPotta
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please
veeebeetwee
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kk