Diketahui fungsi linear h(x)=ax+b.jika h(-5)=-1 dan h(4)=17, maka tentukan:nilai h(2)

-5a + b = -1
4a + b = 17
—————— –
-9a = -18
a= -18/-9
a = 2

4a +b = 17
4(2) + b = 17
b = 17-8
b = 9

h(2) = 2(2)+ 9
= 4 + 9
= 13