Precalculus

17.19.–2–3–4–523. Center: (0, 0); radius: 22y54321–5–4–3 –2 –1 1 2 3 4 5–2–3–4–51064254321–5–4–3 –2 –1–11 2 3 4 5–2–3–4–521. Center: (0, 0); radius: 5yx52 + y 2 = 254321x–5–4–3 –2 –1 1 2 3 4 5y–10 –8 –6 –4 –2–22 4 6 8 10–4–6–8–10y2x 2 + 2y 2 = 16xxx25. Center: (4, 1) ; radius: 2y27. Center: (2, 3) ; radius: 2y29. Center: ( 3 ; radius: 22 , 1 )31.33.35.5(x + 4) 2 + (y – 1) 2 = 43(–4, 1) 21–5–4–3 –2 –1 1 2 3 4 5543x 2 – 4x + y 2 + 6y + 13 = 41–5–4–3 –2 –1 1 2 3 4 55434x 2 + 12x + 4y 2 + 8y = 31–5–4–3 –2 –1 1 2 3 4 5(– 3, –1)2(x 1) 2 (y 3) 2 16(x 4) 2 (y 3) 2 25(x 1) 2 (y 5) 2 1837. ii 39. iii 41. vi43. a. ii b. i c. iv d. iii45. a. i b. iii c. iv d. ii47. a. x 2b.c.49. a.b.c.51. x-intercepts:–2–3–4–5–2–3–4–5–2–3–4–5y(2, –3)(, 2)(2, )x 3, x 2(3, 2)(, 3) (2, )x 10.41, x 2.75, x 10.05y-intercept: y 1253. (4, 12)55. x 10.24, x 5.76xxxAnswers Section 1.4 A-3