Question

The point on the curve y = 6x –x² where the tangent is parallel to x- axis is

• A. (0, 0)
• B. (2, 8)
• C. (6, 0)
• D. (3, 9)

Answer 1

Answer: (D)

(3, 9)

Answer 2

$\frac{dy}{dx}$ = 6 – 2x = 0 ; x = 3 ; y = 9 ŗ (3, 9)