Question

Q1.solve the pair of linear eqautio graphically x-y+1=0 and 2x+2y-12=0​.

Answer 1

Explanation:

Given

We have given two pair of linear equations

x-y+1=0 & 2x+2y-12=0

To find

We have to find value of x and y

SOLUTION:

➙ x-y+1=0

➙x=y-1

At x

y=0

➙x= -1

At y= 1

➙x= 1-1=0

➙x=0

At y=2

➙x= 2-1=1

➙x=1

Plot points in table

$\begin{gathered}\large \boxed{\begin{tabular}{c|c|c|c}x & -1 & 0 & 1 \\ \cline{1-4} y & 0 & 1 & 2\end{tabular}}\end{gathered}</p><p>$

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2x+2y-12=0

➙2x+2y=12

Taking 2 common

➙2(x+y)=12

➙x+y=6

➙x= 6-y

At y=0

➙x=6

At y= 1

➙x= 6-1=5

At y= 2

➙x= 6-2=4

Plot points in table

$\begin{gathered}\large \boxed{\begin{tabular}{c|c|c|c}x & 6 & 5 & 4 \\ \cline{1-4} y & 0 & 1 & 2\end{tabular}}\end{gathered}$

Note :As this is not visible on app kindly see from web .

From graph 3 we see that the lines intersect at 2 & 4

So,x will be 2 and y will be 4

Hence,the value of x= 2 ,y=4.

Check:

➙2x+2y-12=0

➙2(2)+2(4)-12

➙4+8-12

➙12-12=0

Answer 2

Answer:

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