Question

what is value of k for simultaneous equations 3x+4y=8 and 9x+ky=24?​

Answer 1

Answer:

Solution :

For infinite solution

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$ANSWER</p><p></p><p>The equations are</p><p>3x+4y−k=0</p><p>9x+12y−6=0</p><p>Here, a1=3,b1=4,c1=−k</p><p>and a2=9,b2=12,c2=−6</p><p>For the system to have infinite solution if</p><p>a2a1=b2b1=c2c1</p><p>⇒93=124=−6−k</p><p>⇒3k=6</p><p>⇒k=2</p><p></p><p>$

Answer 2

Answer:

12

Step-by-step explanation:

So,

3x + 4y = 8

multiply by 3

9x + 12y = 24

and

9x + ky = 24

so,

k=12

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