Yes, the ratio would change because you are adding.
Please remember to give me a brainiest answer if i was!
1. (2,7) and (-7,-2) --> The answer would be B.
2. B, simply use substitution, convert, do quadratic formula, and plug in x values to find y values.
3. D, no real solution. You can use a graphing calculator
Base on the data you have given and with my calculation, i think the best value for Delta X and Dy is delta x = 2 and the DY = 1/2.I hope you are satisfied with my answer and feel free to ask for more if you have more clarifications and further questions