Question

whether the following pair of linear equations has a unique solution or not to x minus y is equals to zero Y + 4 is equals to zero

please show it graphically​

Answer 1

Answer:

yes it has a unique solution

since we know y+4=0

so y=-4

now x-y=0

so x-(-4)=0. (as we found y=-4)

x+4=0

x=-4

and, x-y=0

-4-(-4)=0