Please help me with these questions

5 7x' The point P(8, 3) lies on the curve y = (a) If Q is the point (x, ), find the slope of the secant line PQ (correct to six decimal places) for the following values of X. 7X P9 5 : (iii) 7.999 mPQ = (iv) 7.9999 mPQ = (V) 8.1 mm = (vi) 8.01 mm = (vii) 8.001 mm = (viii)8.0001 mpQ = (b) Using the results of part (a), guess the value of the slope of the tangent line to the curve at P(8, 3). m: (c) Using the slope from part (b), find an equation of the tangent line to the curve at P(8, 3). ll