He didn't follow the order the instructions were given to him
The Right expression is:
x-3x10-13
....................................................................
What you would do is you would substitute each ordered pair into their respective variables. (ie. for (0,1) you would put 0 where the x is and 1 where the y is) You would then solve the equation. If the equation is not even (ie. 2=5 would not be even but 4=4 would be), you move on to the next ordered pair.
If you follow the process right and you get the equations correct, the answer should be B. (7,-2)
Answer:
Maybe try 23-9. Or maybe the answer is 23, hopefully this helped.
Step-by-step explanation: