Answer:
if you have a demos or a school calculator you can put in “ graph and tables “ then you can out in the alone numbers 5,6,7,8 into the left side and on the top put X. Next to that X put Y and put -10 on each, then go to a purple one the answer should be x=2.8 etc. + another number. That should be your answer in X if thats is what its asking.
For the second one it should be the same except you will be using Y.