please answer all of them, it's urgent!

Find the point on the curve y = a3/ 2 for which the tangent line to the curve is perpendicular to the line 16x + 135y + 422 = 0. Note: Write the exact answer but not the approximate value (For example write # but not 0.8) Answer: The point is (I, y) where y = For what value of a does the tangent line to the curve y = 9 + 2e - 4x is parallel to the line 10x - 10y = 2 ? Note: Write the exact answer but not the approximate value (For example write # but not 0.8) Also write In ( , ) not In- or log_e ( ? )