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y - 3 = 2(x+4)
y - 3 = 2x + 8
y = 2x + 11
2x - y + 11 = 0
no 29)
gak keliatan
no 30)
2x + 3y = 6
m1 = -2/3, sejajar m1 = m2 = -2/3
pers garis =
y - 2 = -2/3(x+3)
y - 2 = -2/3x - 2
y = -2/3x
3y = -2x
2x + 3y = 0
no 31)
2x + 6y - 12 = 0
m1 = -2/6 = -1/3
tegak lurus, m2 = -1/(-1/3) = 3
pers garis
y + 2 = 3(x+4)
y + 2 = 3x + 12
y = 3x + 10
no 32)
gradien (-7,-4) dan (5,-5)
m = (-5+4)/(5+7) = -1/12
pers garis =
y + 4 = -1/12 (x - 6)
y + 4 = -1/12x + 6/12
12y + 48 = -x + 6
12y = -x - 42
-x - 12y - 42 = 0
x + 12y + 42 = 0
12y + x = -42
no 33) D
masukkin aja
no 34)
hp di titik potong yg C