, ! 



oioiQO*OK>70*e)tO*; ate(-M9) 

 ; -coe-coi; oot (-1*16*). oc*4ft*. 



(1) dnf-.ettitl0 e 

 (!) f = 30; (8) .; (4) . 



Page 23. Art. 17 



** 



4 - a - if a to the edge of the cub*. I. V* 1 '. & 6tn. 7. a 



X 



Page 28 Ait. 22 



3. Point of Inttntction to (0, 0); middle point to (0, 0). 

 4 ' ni the axto of ihictoMi (s-ajde); oo the aito of onilnam (jHtito); on 

 the line btoecting the lit and 3d angle* formed by the coordinate ax ; on 



A. jf ss 0, x = 0, x - y = 0, x + y 0. 



(-I. 0), (|, 0), and (0, JV^); (0, 0), (6, 0) f and (0, 6). 

 T. (fvf, 0), , (-|>/i, 0), and (0, - |%/i); (0,0), (0,5), 



(6V5, 0), and (6V5, "6). 

 8 (3, &i). 



Page 30. Art. 23. 



(3, - 



(0, -ISO ), (0, 



ft. On circumference of a circle of rmdtoa 7 and center at the pole ; eame 

 circle ; on the line through the pole making an angle of SO* with the initial 

 line ; , . the initial line ; on the initial line. 



6 ^ = 7;^ = -7; fifi;f = 0*'>; * = - 



7. I*arallel to the initial line. 



Page 33. Ait. 27. 



1 x 



4 



-400*-. t. 8 or - W. 



8 >/(+>)<- (f-3)<8, U. 



9. 18x + 4y = 61. 10 1; V; -|; - 



