Page 328 - Calculus Demystified

Final Exam
(b) a circle 315
(c) a parabola
(d) a hyperbola
(e) a directrix
10. The line that passes through the point (−4, 5) and has slope 3 has
equation

(a) x + 3y = 2
(b) x − 3y =−4
(c) −4x + 5y = 3
(d) 3x − y =−17
(e) 3x − 5y = 4
11. The line 2x + 5y = 10 has slope

(a) 3
(b) 1
(c) 1/5
(d) −1/5
(e) −2/5
2
2
12. The equation 2x + 2y = 4 describes
(a) A circle with center (0, 0) and radius 2
√
(b) A circle with center (0, 0) and radius 2
(c) A circle with center (2, 2) and radius 2
(d) A circle with center (4, 4) and radius 4
(e) A circle with center (2, 4) and radius 1
2
13. The equation x + x + y = 0 has graph that is
(a) a circle
(b) a line
(c) a parabola
(d) two crossed lines
(e) a hyperbola
14. The sine, cosine, and tangent of the angle 5π/3 (measured in radians)
are
√ √
(a) 1/2, 3/2, 3
√ √
(b) 3/2, 1/2, 1/ 3
√ √
(c) 2/2, 2/2, 1
√ √
(d) − 3/2, 1/2, − 3
(e) 1, 0, undefined