Question

If ( 3,2) is a solution of 4x - 2y = k , then the value of k is

a) 6
b) 7
c) 12
d) 8 ​

Answer 1

Step-by-step explanation:

$4x - 2y = k \\ \\ 4x = k + 2y \\ \\ x = \frac{k + 2y}{4} \\ \\ let \: y \: be \: 0 \\ \\ x = \frac{k + 2(0)}{4} \\ \\ \\ x = \frac{k}{4}$

2x+3y=k

⇒k=2×2+3×0

⇒k=4

Hence the value of k=4

hope it helps.........

Answer 2

$\begin{gathered}4x - 2y = k \\ \\ 4x = k + 2y \\ \\ x = \frac{k + 2y}{4} \\ \\ let \: y \: be \: 0 \\ \\ x = \frac{k + 2(0)}{4} \\ \\ \\ x = \frac{k}{4} \\ \\\end{gathered} \\ \\ </p><p></p><p>2x+3y=k \\ </p><p></p><p>⇒k=2×2+3×0 \\ </p><p></p><p>⇒k=4</p><p></p><p>$