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h(3)=11 artinya x=3 dan h(x)=11
h(x)=mx+n
7=m.1+n -> 7=m+n
11=m.3+n -> 11=3m+n
eliminasi kedua persamaan
4=2m
2=m
7=m+n
7=2+n
5=n
Jadi m=2; n=5... sehingga h(x)=2x+5
Nilai dari
h(2)= 2.2+5
= 4+5
= 9
h(0)= 2.0+5
= 0+5
=5
h(-1)=2.-1+5
= -2+5
= 3
Substitusikan m ke h(1),