Which set of steps shows the solution to the equation 3y = −9?

y = −9 − 3; y = 6
y = −9 ÷ 3; y = −3
y = −9 ÷ (−3); y = 3
y = −9 − (−3); y = −6

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 is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

Which expression is equivalent to sq-80