PRE - CALCULUS 2 nd Semester 2020- 2021 WEEK 1 (April 9, 2021 ) I. Determine the center and radius of the following circles. ( 3 points each ) 1 ) ( x - 4 ) " + ( y + 8 ) - 100 6 ) 4x * + 4 42 = 25 2 ) ( x + 4 ) " + ( 4 - 3 ) ' - 16 7 ) ( x - 8 ) + ( 4 - 1 )* = 40 3 ) ( x + 1 ) 2 + 4 2 = 4 8 ) X " + y ?- 12x - log =-12 4 ) x 2 + (4- 2) 2 - 34 9 ) x " ty 2 - 8x - 84 = 0 5 ) X " + 4 2 = 49 10 ) * + 42 + 10* + 124 = - 12 Sample Final Answer: center ( -, _), r = - I. Find the equation of a circle defined by the following. (4 points each ) 1 ) center at (010) ; radius 3 2 ) center at ( 4,-5 ) ; radius 5 1) center at the origin , radius 202 4 ) center at ( - 2, -5 ) ; diameter 18 5) endpoints of the diameter : (0, 0) and (418)PRE - CALCULUS 2nd Semester 2020 - 2021 WEEK 3 ( May 21, 2021 ) ELLIPSE I. Find the center, vertices four, and endpoints of minor axis of the following. (5 points for each number?. 1 ) * + 4 = 1 4 ) ( 8 + 2 ) 2 36 4 [ y -1 ) = 36 2 64 2 ( * - 4 ) + ly+ 8 ) - = 25 ( ) ( * + 5 ) + 4 (4-4 ) = 16 3 ) 4 * + 42 = 100 I . Find an equation for each ellipse. (5 prints for each number). 1 ) center at 10, 0) ; forus at (3, 0 ) ; vertex at ( 5, 0 ) 2 ) center at (2, -2 ) ; vertex at ( 7,-2); focus at ( 4, - 2) 3 ) center at (0, 0) ; vertex at ( 0, 4 ) ; b=1 4) center at (o, 0); focus at ; vertex at (0,-2) (0, 1 )