Question

show that the equations are concurrent 2x+3y=11,4y-2x+4=0,x+y=5

Answer 1

solve the first two equations simultaneously, find x & y
solve first and last equation find x&y..
solve second and last equation..
you will find x &y to be the same..
thus they are concurrent

Answer 2

Answer:

Yes they are concurrent

Step-by-step explanation:

2x+3y=11.........(1)

-2x+4y=-4.....(after solving 4y-2x+4=0).....(2)

x+y=5..........(3)

Add (1) and (2)

2x=3y=11

+

-2x+4y=-4

_________

7y=7

*y=1*

plce y in (1)

2x+3=11

2x=11-3

*x=4*

Place x and y in (3)

x+y=5

4+1=5

*5=5*

Hence they are concurrent