Solve the system by substitution. x + 2y = 3 5x + 2y = 31
A. ?
B. {(8, -3)}
C. {(2, 7)}
D. {(7, -2)}
Answer: D
Mathematics
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For the given correspondence, write the domain and the range. Then determine whether the correspondence is a function.{(7, 2), (-6, 4), (4, -5), (7, -9)}
A. domain: {-6, 4, 7}, range: {-9, -5, 2, 4}; No, it is a not a function. B. domain: {-6, 4, 7}, range: {-9, -5, 2, 4}; Yes, it is a function. C. domain: {-9, -5, 2, 4}, range: {-6, 4, 7}; Yes, it is a function. D. domain: {-9, -5, 2, 4}, range: {-6, 4, 7}; No, it is a not a function.
Mathematics
Simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics
Simplify.48 ÷ 0 + 48
A. 1 B. 96 C. Undefined D. 48
Mathematics
The graph of a one-to-one function f is given. Draw the graph of the inverse function f-1 as a dashed line or curve.f(x) = 3x
A. 
B. 
Mathematics