Question 1 1 pts Suppose that we observe three data points of (Y;, X; ) as (2, -1), (1, 0), and (3, 1). Let s(x) = ajc + bj be the first-order spline interpolation function in the interval x E [-1, 0]. Compute the values of aj and b1. CL1 -1 and b1 1Question 4 Assume that we observe four data points of I: [1. 0].. l2, 1}. [1,2], and {3, 3}. Consider the Bspline basis of orderd. There are Tl -"1 points, and the four x_i values are called knots. Thus there are 4 Bspline basis of order {I {L [=1 if inside this interval an x1=0_. x2=1_. x3=2_. x4= 3. Now Using the formula that we can compute the 3 Bspline baSIs of order of l: and 2 Bspline basis of order if 2: etc. What is the form of Bsp-Iine basis 3 1 of order d=1