Find the y-intercept.y = x2 + 8x
A. 0 and 8
B. -8
C. 0 and -8
D. 0
Answer: D
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 
A. Domain: all points in the xy-plane; range: all real numbers; level curves: parabolas 
B. Domain: all points in the xy-plane excluding x = 0; range: all real numbers; level curves: parabolas 
C. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: parabolas 
D. Domain: all points in the xy-plane excluding x = 0; range: real numbers z ? 0; level curves: parabolas 
Graph the function.y = |cot 
| 
A. 
B. 
C. 
D. 
List the critical values of the related function. Then solve the inequality.x - 3 > 
A. 
, 0, 
; 
? 
B. No critical values; ?
C. 
, 
; 
? 
D. 
, 0, 
; 
? 
List the intercepts of the graph. 
A. (-3, 0), (0, 3), (0, 1), (0, 5) B. (3, 0), (1, 0) (5, 0), (0, -3) C. (-3, 0), (0, -3), (0, 1), (0, -5) D. (-3, 0), (1, 0), (-5, 0), (0, -3)