Please help me out on this math problem No links :)

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 undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x, y) ?

Select the number of ways in which a line and a circle can intersect