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+//clc()
+x = [1,2,3,4,5,6,7];
+y = [0.5,2.5,2,4,3.5,6,5.5];
+n = 7;
+s = 0;
+xsq = 0;
+xsum = 0;
+ysum = 0;
+for i = 1:7
+ s = s + (det(x(1,i)))*(det(y(1,i)));
+ xsq = xsq + (det(x(1,i))^2);
+ xsum = xsum + det(x(1,i));
+ ysum = ysum + det(y(1,i));
+end
+disp(s,"sum of product of x and y =")
+disp(xsq,"sum of square of x = ")
+disp(xsum,"sum of all the x = ")
+disp(ysum,"sum of all the y = ")
+a = xsum/n;
+b = ysum/n;
+a1 = (n*s - xsum*ysum)/(n*xsq -xsum^2);
+a0 = b - a*a1;
+disp(a1,"a1 = ")
+disp(a0,"a0 = ")
+disp("The equation of the line obtained is y = a0 + a1*x")