

IS. 



15 x : xJ + \fitt, -3)ind(-Vi-VH-l); or(0, - 



1 V8 4 v'lu. I) Mi (- VI - V lu, 8). 

 U. Or- 18f+13 = 0, , + 1.0. 



19 Hyperbola; |Vi.O; -I|Vi; <-|.0); \.\, 1. 



0. Thia equation may be written i ' + iL=JT . 1. which 



ii II 



that itia an hyperboU ; that the center la at (- |, |); that the 

 a*U la 2 V|| I V73 and U parallel to the y*x!a, ete. 

 SI. ThU equation may be written : (* - 2) = 4 V (f + * ). 

 S3. ThU equation may be wrtttt* t iiLl-Ll!^iLJi! i. _ w , 



tS. ThU equation may be written: (x - y) (3x 4 Sjr- 6) .0, a pair 



M Ancliipee; 



| V8. Tbls queaiion may be aolved by aeeamlnf that the foct It at (A, i) 

 and that the directrix b 1* + my = I. and then finding *. *, f. and by a 

 compariium of equation. ; cf. Aru. IWandlM 



Page 224. Art. 137. 

 S. y|Vi-|-V8p t and y = - |v^* - >/3|>; 1:2. 



= 0; thedlrectrix. 

 7. 4y = 3x+ 12; 4xH.3y = 34. S. 



10 r + y + p.a 



is. W; 3 VI 



14. y = 3*+l; (1,2); JN U. /.3& 



Page. 229. 23O. Art. 138. 

 1 t{ x-3(^-2^ S. (-p,>. 



Page* 234. 235 Art. 141 



S. 4x^3ve. S.y|. 4. - - 2. 



-4r. Si (oo, ). 



