Question

For what value of ‘k’,x=2 and y=-1 is a solution + 3 − = 0?​

Answer 1

Answer:

Given equation, 2x+3y=k

x=2,y=1 is solution of resultant equation.

2(2)+3(1)=k

∴k=7

∴ Resultant equation is 2x+3y=7

At x=0,2(0)+3y=7

y=

3

7

At y=0,2x+3(0)=7

x=

2

7

∴(0,

3

7

) and (

2

7

,0) are two more solutions of resultant equations