Question: In Exercises 1-3, for what value(s) of k, if any, will the systems have (a) no solution, (b) a unique solution, and (c) infinitely many

In Exercises 1-3, for what value(s) of k, if any, will the systems have (a) no solution, (b) a unique solution, and (c) infinitely many solutions?
1. kx + 2y = 3
2x - 4y = -6
2. x + ky = 1
kx + y = 1
3. x - 2y + 3z = 2
x + y + z = k
2x - y + 4z = k2

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