Provide an appropriate answer.Find 
when u = 0 and v = 
if z(x, y) = sin x + cos y, x = u ? v, and y = u + v.
A. 
= 0
B. 
= 2
C. 
= 1
D. 
= -1
Answer: C
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Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = 
x3
A. 
B. 
C. 
D. 
Find the maximum and minimum values of the function and the values of x and y for which they occur.Q = 2x + 5y, subject to3x + 2y ? 6,-2x + 4y ? 8,x ? 0,y ? 0.
A. Maximum: 12
when x = 
and y = 
; minimum: 4 when x = 2 and y = 0
B. Maximum: 10 when x = 0 and y = 2; minimum: 0 when x = 0 and y = 0
C. Maximum: 13
when x = 
and y = 
; minimum: 0 when x = 0 and y = 0
D. Maximum: 12
when x = 
and y = 
; minimum: 0 when x = 0 and y = 0
Find the focus and directrix of the parabola with the given equation.9y2 = -4x
A. Focus: 
, directrix: x = - 
B. Focus: 
, directrix: y = 
C. Focus: 
, directrix: y = 
D. Focus: 
, directrix: x = 
Find the slope and the y-intercept from the equation of the line. Sketch a graph of the equation.y = 2x - 4
A. m = 4, y-intercept = 2
B. m = 2, y-intercept = 4
C. m = 4, y-intercept = 2
D. m = 2, y-intercept = - 4