You are given a data set of (x,y) as x[7]={-2, -1, 0, 1, 2, 3, 4}; y[7]={0.6, -4.6, -6.0, -3.4, 1.2, 11.7, 15.9}; or x -2 -1 0 1 2 3 4 y 0.6 -4.6 -6.0 -3.4 1.2 11.7 15.9 You want to fit the data with two different regression curves, i.e, in the form of y = a1 x2 + b1, or y = a2 x + b2, Write a C code to determine a1, b1, a2, b2 for x[7] and y[7]. Plot the data points and two curves together like the graph above with GNUplot