Aparabola is defined by the equation x2 = y. in which direction will the parabola open?
up
down
right
left
cannot be determined

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.