Transform the polar equation to an equation in rectangular coordinates. Then identify and graph the equation.r = 4 cos ?
A. 
x2 + (y - 2)2 = 4; circle, radius 2,
center at (0, 2) in rectangular coordinates
B. 
(x + 2)2 + y2 = 4; circle, radius 2,
center at (-2, 0) in rectangular coordinates
C. 
x2 + (y + 2)2 = 4; circle, radius 2,
center at (0, -2) in rectangular coordinates
D. 
(x - 2)2 + y2 = 4; circle, radius 2,
center at (2, 0) in rectangular coordinates
Answer: D
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A. - 
B. 
C. - 
D. -2
Determine whether the graph representing the equation is symmetric with respect to the x-axis, the y-axis, the origin or none.4x = |y|
A. x-axis only B. x-axis, y-axis, origin C. y-axis only D. origin only
Find the value of x and the value of y for which (x, 2) and (8, y) are points on the graph.-4x - 3y = 7
A. x = 
, y = 
B. x = 
, y = - 
C. x = - 
, y = - 13
D. x = 
, y = - 13
Simplify the expression. Assume all variables represent nonnegative real numbers.z1/2 ? z2/3 ? z5/7
A. z42/79 B. z1/4 C. z4/15 D. z79/42