Question

if (5,1) is solution of a linear equation x+y+k=0 then the value of "k” is​

Answer 1

Answer- The above question is from the chapter 'Linear Equations in Two Variables'.

Some important points:

Linear equation in two variables is expressed as: ax + by + c= 0

Solution of such equations are expressed as (x,y).

Question: If (5,1) is solution of a linear equation x+y+k=0, then the value of ''k'' is​ ?

Solution: Given equation- x+y+k= 0

Given solution- (5,1)

Now, x= 5 and y= 1

Substituting values of x and y,

5 + 1 + k= 0

6 + k= 0

k= -6

∴k= -6

Answer 2

$\huge \fcolorbox{red}{pink}{Solution :)}$

Given ,

• (5,1) is solution of a linear equation x + y + k = 0

Thus , substitute x = 5 and y = 1 in linear equation , we get

5 + 1 + K = 0

6 + K = 0

K = -6

Hence , the value of K is -6

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