Is this right or not tell me plzzz quick

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.)

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

When rolling 26 sided number cube what are the chances some of the role will be seven