Let f(x) = a(7-x^2) where a is not equal 0 (a) find, in terms of a, the equation of the line tangent to the curve at x = -1 (use point slope) (b)

Let f(x) = a(7-x^2) where a is not equal 0(a)  find, in terms of a, the equation of the line tangent to the curve at x = -1 (use point slope)(b)  find, in terms of a, the y intercept of the tangent line at x = -1(c)  find the x intercept of the tangent line at x=-1