please help me solve these

(1 point) Let f(x) = > . Compute f' (-5). Answer: Use this to find the equation of the tangent line to the hyperbola y = X at the point (-5, -0.600). The equation of this tangent line can be written in the form y = mx + b. Determine m and b. ME b =(1 point) Find a and b such that the function f (x) = x2 - 6x+7 if x$1 ax +b if x > 1 is differentiable everywhere. b =\f