Question

3)Solve the following pair of linear equations graphically:x-y = 1 & 2x + y = 8.Also, find the co-ordinates of the points where the lines represented by the above equation intersect y -axis​

Answer 1

Answer:

2x−3y=1

atx=0,y=(

3

−1

)

andaty=0,x=(

2

1

)

socoordinatesforlineare(0,(

3

−1

))and((

2

1

),0)

now

4x−3y+1=0

atx=0,y=(

3

1

)

andaty=0,x=(

4

−1

)

socoordinatesoflinesare(0,(

3

1

))and((

4

−1

),0)

So, clearly from the graph (-1,-1) be a solution of given system of linear equation.