Which of the following equation represents y as a function of x?
?
A. y2= 9 -x
B. y3 = x+ 9
C. y2 = x + 9
D. x2 + y = 9
E. x2 + y2 = 9
Answer: D
Mathematics
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< 19
A. (-?, 0) or (9, 10) B. (0, 9) or (9, 10) C. (-?, 0) or (10, ?) D. (0, 9) or (10, ?)
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Simplify the rational expression. If the rational expression cannot be simplified, so state.
A. 
B. 
C. Cannot be simplified
D. 
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Use a graphing calculator to solve the system. Round to the nearest thousandth.
x + y = 50.4x - y = 3
A. {(-2.947, 8.789)} B. {(2.258, 2.097)} C. ? D. {(4.746, -1.102)}
Mathematics