Matlab question

Fit a line using linear regression to the following data set. Then linearly interpolate x = [ 0.13653 0.14551 0.28696 0.47473 0.48740 0.75441 0.88754 0.91808 0.94291 0.97388]; y- 0.29250 0.79586 0.78081 0.12643 0.144090.50125 0.40181 0.83697 0.34130 0.27120 1; Evaluate both at pointx-0.5. Store the absolute value of difference of these two in a variable lindiff