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2x+ky=7 and 4x-9y=4 find value of k if matrix of coefficients is singular

2x+ky=7 and 4x-9y=4 find value of k if matrix of coefficients is singular
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2x+ky=7 and 4x-9y=4 find value of k if matrix of coefficients is singular

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User Quma
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1 Answer

7 votes
Hello,

| 2 k|
|4 -9 |=6

==>2*(-9)-4*k=0
==>k=-9/2

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User MoonFruit
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