Write four solution of the equation `pi x + y =9`

Explanation

Given equation is `pix+y=9`
Now put the value of x=0 in given equation.
So,we get `y=9`
Again put the value of x=1 in given equation.
`y=9-pi`
Again, put the value of y=0 in given equation.
`x=9/pi`
Lastly again, put the value of y=1 in the given equation.
`x=8/pi`
`therefore` four solutions are (`0,9`) , (`1`,`9-pi`) , (`9/pi`,0) and (`8/pi`,1)