1.

If the system of equations 7x - y - 5 = 0 and ax - 5y - 25 = 0 has infinite number of solutions, then for k \(\in\) IR the general solution (x, y) of the system is

A. (k + 5)/7, k
B. \((k,\frac{a}{7})\)
C. k, (k - 5)/7
D. \((7k - \frac{a}{7}k)\)
Answer» B. \((k,\frac{a}{7})\)


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