Please write this in MATLAB AND ANSWER ALL PARTS:)

3) POLYNOMIAL FITS Using the following data 0 2 10 4 21 6 15 8 18 10 18 12 30 14 35 16 42 y 5 a) Find the least-squares best fit line to the data above using the method described in class. If the fit has the form f(x) = ax + b, save the value of a on HW4_12.dat, and b on HW4_13.dat b) Find the least-squares best fit parabola to the data above using the method described in the lectures. If the fit has the form f(x) = ax + bx + c, save the values of a, b, and con HW4_14.dat, HW4_15.dat, and HW4_16.dat