Whoever gets this question right, I will mark brainilest! Thanks!

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.)

When only separate discreet points are graphed it is called?

What is sin 7x/4 ? i need on this urgent trig