1) -10x+y=4
Now, you should substitute x in every situation.
* x=-2 => -10*(-2)+y=4... 20+y=4... y=-16
* x=-1 =>-10*(-1)+y=4... 10+y=4... y=-6
*x=0 => -10*0+y=4... y=4
* x=1 => -10*1+y=4... -10+y=4... y=14
* x=2 => -10*2+y=4... -20+y=4... y=24
2) -5x-1=y
For example: x=0
-5*0-1=-1
