Solve graphically.x - y = 4y = -3x
A. (-1, 3)
B. Infinitely many solutions
C. No solution
D. (1, -3)
Answer: D
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Convert the rectangular equation to polar form.x2 + y2 - 4x = 0
A. r sin2? = 4 cos ? B. r cos2? = 4 sin ? C. r = 4 sin ? D. r = 4 cos ?
Sketch an angle ? in standard position that satisfies the stated conditions.Positive and coterminal to ? = -180° if ? is in standard position 
A. 
B. 
C. 
D. 
A function f is continuous at the point 
if the following conditions are satisfied.
?
1. 
is defined.
2. 
exists.
3. 
.
?
Determine the values of x, if any, at which the function is discontinuous. At each point of discontinuity, state the condition(s) for continuity that are violated.
?
?
?
A. 
; conditions 1, 2
B. 
; conditions 2, 3
C. 
; conditions 1, 2
D. 
; condition 2
E. Continuous everywhere.
Indicate whether the function is one-to-one.Age Average Number of Children 18 -------------> 0.1 23 -------------> 0.4 25 -------------> 0.7 30 -------------> 1.2
A. No B. Yes