Plz answer all these questions ASAP thank you very much i will give anyone who answers it right a brainliest

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

Which of the following can be used to explain a statement in a geometric proof?

What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²