Question

please solve the 8th

Answer 1

Hello,

The two equations are
$x + 2y + 7 = 0 \\ 2x + ky + 14 = 0$
For being coincident the lines should follow r rule

A1/a2 = b1/b2 = c1/c2

So,
A1 /a2 = b1/b2
Or,
$\frac{1}{2} = \frac{2}{k} \\ \\ k = 2 \times 2 = 4$
So,

K is equal to 4

Hope this will be helping you ✌️