Question

7. If (2, 2) is a one solution of 2x + ky + 6 = 0 find the value of k​

Answer 1

Answer:-

• (2,2) is a solution of 2x+ky+6=0
• Put the vale in equation.

$\\ \sf\longmapsto 2x+ky+6=0$

$\\ \sf\longmapsto 2(2)+k(2)+6=0$

$\\ \sf\longmapsto 4+2K+6=0$

$\\ \sf\longmapsto 2k+10=0$

$\\ \sf\longmapsto 2k=-10$

$\\ \sf\longmapsto k=\dfrac{-10}{2}$