WeBWorK Standalone Renderer

Sketch a graph of each surface. Then, match each surface to its brief description in words.

1. $z = x^2 + 9 y^2 + 4$

2. $1 x + 5 y + 4 z = 4$

3. $x = 3$

4. $z^2 = x^2 + 36 y^2$

5. $x^2 + y^2 = 25$

6. $x^2 + y^2 + z^2 = 16$

7. $z = -3$

8. $z = 6 y^2$

9. $z = 9 x^2 - y^2$

A. Vertical plane
B. Hyperbolic paraboloid (saddle)
C. Circular cylinder
D. Point
E. Skew plane
F. Cone
G. Sphere
H. Elliptic paraboloid
I. Horizontal plane
J. Skew line
K. Parabolic cylinder
L. Vertical line
M. Horizontal line

You can earn 10% partial credit for 2 - 4 correct answers, 60% partial credit for 5 - 6 correct answers, and 80% partial credit for 7 - 8 correct answers.