Parameter values for no, unique or infinitely many solutions (coefficient ratios)

1. A.
   $\frac{8}{9}$
2. B.
   $\frac{1}{2}$
3. C.
   $\frac{2}{7}$
4. D.
   $\frac{9}{7}$

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1. A.
   $a = 1, b = -1$
2. B.
   $a = -1, b = -1$
3. C.
   $a = -1, b = 1$
4. D.
   $a = 1, b = 1$

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1. A.
   16
2. B.
   9
3. C.
   7
4. D.
   18

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1. A.
   a = 3,b $\ne$ 1
2. B.
   a = -3,b $\ne$ 1
3. C.
   a = -3,b $\ne$ -1
4. D.
   a = 3,b $\ne$ -1

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1. A.
   12
2. B.
   25
3. C.
   5
4. D.
   6

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1. A.
   22
2. B.
   20
3. C.
   25
4. D.
   15

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1. A.
   $4$
2. B.
   $-\frac{1}{2}$
3. C.
   $-\frac{1}{4}$
4. D.
   $2$

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1. A.
   $a = -\frac{3}{2}, b = 2$
2. B.
   $a = 2, b = -\frac{3}{2}$
3. C.
   $a = 3, b = -\frac{2}{3}$
4. D.
   $a = 3, b = -\frac{3}{2}$

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1. A.
   $K_2 = 3K_1$
2. B.
   $K_1 + K_2 = 0$
3. C.
   $K_2 = K_1$
4. D.
   $K_2 + 3K_1 = 0$

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1. A.
   $k \ne 5$
2. B.
   $k \ne 7$
3. C.
   $k = 5$
4. D.
   $k = 7$

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