Question

give answer of any three questions....... don't spam....​

Answer 1

$\huge\underline\orange{♡ANSWER♡}$

3.) equation are

3x+5y−3=0 ....(1)

6x+ky−8=0 .....(2)

Here, a1 =3,b1 =5,c1 =−3

and a2 =6,b2 =k,c2 =−8

The given system has no solution if

a1/a2 = b1/b2 is not equal to c1/c2

⇒3/6 = 5/k is not equal to -3/-8

⇒3k=30⇒k=10

4.) In attachment....

7.) In attachment..

Answer 2

For answer see in the above picture

I hope it will help you.....