did i do this right?

Question 4 2 pts Given the following data: x|-1|123 5 Ty -14|1 -5/2 Estimate the value of y at x = 1.4 using an interpolating polynomial that goes through all the data points: 3.3584 a spline interpolation: 3.2960 Note: to receive credit for your answers, you must give your answers to 4 decimal places (use the default settings for MATLAB, i.e., format short, which gives answers to 4 decimal places, e.g., do not have MATLAB display more than 4 decimal places and then round your answer)