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2x=6
x=3
y=4x-2
y=4.3-2
y=10
jadi titik potongnya (3,10)
b. y=x-5
y=-3/2x
x-5=-3/2x
5/2x=5
x=2
y=x-5
y=2-5
y=-3
jadi titik potongnya (2,-3)
c. y=-½x-½
y=2x+5
-½x-½=2x+5
5/2x=-11/2
x=-11/5
y=-½x-½
y=-½.(-11/5)-½
y=6/10=3/5
jadi titik potongnya (-11/5,3/5)