Question

draw the graph and find the unique solution of x+y=5 and x-y =1
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Answer 1

Answer:

x+y=5

if x=0,

then,0+y=5

y=5

x+y=5

if y=0,

then,x+0=5

x=5

x-y=1

if x=0,

then,0-y=1

-y=1

y=-1

if y=0

then,x-0=1

x=1

x 0 5

y 5 0

x 0 1

y -1 0