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sehingga persamaan garisnya adalah
y -1 =3/4(X-(-1))
y -1 = 3/4x + 3/4
y = 3/4x+ 7/4
4y = 3x + 7
3x-4y+7 =0
2. cari batasnya dulu y1=y2
sehingga
batasnya adalah -4<x<1
= 183 3/2