Question

Q. 3
Find the value of k if x=, 2, y=0 is a solution of the equation
2x+3y=k.
(a) 4
(b) 6
(3) 5
(d) 2​

Answer 1

Answer:

k=4

Explanation:

as x =2 and y= 0 WE SUBSITUTE THE VALUE IN THE GIVEN EQUATION AND WE WILL GET

2x+3y=k

2(2)+3(0)=k

4=k

Answer 2

Answer:

k=4

Explanation:

when x=2,:-

2(2)+3y=k

4+3y=k

3y=k-4

y=k-4/3_____(1)

now,

y=0 (given)____(2)

now,

using equation 1 in 2:-

k/3-4/3=0

k/3=4/3

on cutting both the denominator:-

k=4