Please help

PART 1. Using the definition of derivative, f'(x) = lim f ( x th ) - f(z) , find the slope of the tangent to the curve at the given point. h +0 h f(x) = 212 - 13x +9;1=5 The slope of the tangent to the curve at c = 5 is Enter a numeraical value for the slope. PART 2. The equation of the line tangent to the curve at z = 5 is Type answer in form y = ma + b