Find the value of a if tangent to curve y = x2 - ax + 7 is parallel to the line 2x - y + 9 = 0 at (- 1, 1) . find-the-value-of-a-if-tangent-to-curve-y-x-2-ax-7-is-parallel-to-the-line-2x-y-9-0-at-1-1

bharti's image