tolong plissss banget dijawab.besok dikumpulin

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Persamaan Garis yg melalui 2 titik,
(x1,y1) dan (x2,y12) :

(y - y1)/(y2 - y1) = (x - x1)/(x2 - x1)

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(5,-5) dan (-5,1)
(y + 5)/6 = (x - 5)/(-10)
Kdua ruas kalikan 30
5y + 25 = -3x + 15
3x + 5y + 10 = 0 ✔

(3,-4) dan (6,2)
(y + 4)/6 = (x - 3)/3
Kdua ruas kalikan 6
y + 4 = 2x - 6
y = 2x - 10 ✔

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Persamaan garis dg gradien m dan mlalui (x1,y1) :
y = m(x - x1) + y1

y = 4/5 (x - (-15)) + 4
y ,= 4/5 (x + 15) + 20/5
5y = 4x + 80 ✔

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3 titik segaris

mDE = mEF
(-3 - (-5))/(-7 - 0) = (-5 - (-7))/(0 - A)
-2/7 = 2/-A
A = 7 ✔