Hexagonal Miller Indices

[yecko]

Homework Statement

Homework Equations

find intercept ==> reciprocal ==> reduction ==> (hkl) miller indices ==> i ==> (hkil) miller indices

The Attempt at a Solution

by using axis a1 a2 z,
intercept: a = 0, b = inf, c=inf
reciprocal: a= inf,b=0,c=0
(hkl)=(inf 0 0)
i=-(h+k) = no conclusion

I believe my approach is wrong... can anyone point out please? thanks