The size of a reference plane created to sketch is: Group of answer choices Infinitely large Has to be set in the option men 216 mm by 280 mm 8.5 inch by 11.0 inch

To do this you want to solve for one variable at a time. So we want to cancel out a variable. Lets cancel x. I will multiply the first equation by the number 4 to get 4y=4x-16.
Now lets solve equation 2 for y, giving
-3y=-4x+3 now add equation 1 to equation 2
Y =-13
Now plug that back in to either
-13=x-4
X=-9
So the answer is (-9,-13)