1/Test 4 Build A Page 6 of 8 4. The following is the graph of some function fux), plotted l over the interval [1,9 flx) lre ueare cansclarg Right homd Answer the following, based on the information contained in the pieture. (a) (6 pts) Suppose we approximate the area beneath the graph of fz), over the in- terval [1.,9 with the approximation R4. On the above picture, draw and shade rectangles whose areas correspond to the terms of R4. Then, estimate the value of R4, based on your rectangles. Ara F 2[3+2+3+4ã Value of R 4square uf ) (2 pts) Now suppose we approxkimiate the sane area with the a in this sum? what is the value of Î Value of Î.r in L8s