Find the constant of proportionality k, and write the linear function relating the two variables.Suppose that y is directly proportional to x. When x = 8, then y = 2.
A. k = 4; y = 4x
B. k = 
; y = 
x
C. k = 
; y = 
x
D. k = 6; y = x + 6
Answer: C
Mathematics
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If possible, evaluate the expression by hand. If not, approximate the answer to the nearest hundredth.5-2
A. 
B. 25
C. -25
D. 
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Use the vertical line test to determine whether the graph represents a function.
A. not a function B. function
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Find a quadratic function that best fits the data. Give answers to the nearest hundredth.
A. y = -4.66x2 - 45.67x + 345.67 B. y = -0.54x2 + 60.05x + 912.48 C. y= -0.7803 + 98.39x - 419.89 D. y = 0.54x2 + 60.05x + 912.48
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Solve the problem.Given that P(A) = 0.35, P(B) = 0.46, and P(A ? B) = 0.59, find P(A ? B).
A. 0.161 B. 0.37 C. 0.22 D. 0.81
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