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Untuk x = 0, maka: 0 + 3y = 9
y = 9/3 = 3 => (x,y) = (0,3)
Untuk y = 0, maka: x + 3(0) =9
x = 9 => (x,y) = (9,0)
*y = -x + 5
Untuk x=0, maka: y = 0 + 5 = 5 => (x,y) = (0,5)
Untuk y=0, maka: 0 = -x + 5 => x = 5 => (x,y) =(5,0)
Gambar titik-titiknya, diperoleh titik potong (x,y) = (3,2)
Sehingga HP ={3,2}