Question

7x-5y+4=0,4x+ky +4=0. Find the value of k for unique solution.

Answer 1

Answer:

k=all real values of k except -20/7

Step-by-step explanation:

when a unique solution exists for two linear equations in two variables

a1/a2is not equal to b1/b2

therefore,7/4 not equal to -5/k

k not equal to-20/7

k=all real values of k except -20/7

Answer 2

Answer:

k=all real values of k except -20/7

Step-by-step explanation:

when a unique solution exists for two linear equations in two variables

a1/a2is not equal to b1/b2

therefore,7/4 not equal to -5/k

k not equal to-20/7

k=all real values of k except -20/7

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