Find the value of k for which the following pairs of equations
have unique solutions:
7x - 2y = 3; 22x - ky = 8
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Answer:
condition for unique solutions is a1/a2 ≠ b1/b2
7x-2y=3,22x-ky=8
a1=7,b1=-2 and a2=22,b2=-k
7/22≠-2/-k
7k≠44
k≠44/7
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