Determine if the equation specifies a function with independent variable x. If so, find the domain. If not, find a value of x to which there corresponds more than one value of y.xy = -9
A. A function with domain all real numbers except x = 0
B. Not a function; for example, when x = -9, y = ±1
Answer: A
Mathematics
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A. n(n - 1)(n - 2)(n - 3)(n - 4)(n - 5) B. (n + 1)(n + 2)(n + 3)(n + 4)(n + 5) C. n(n - 1)(n - 2)(n - 3)(n - 4) D. (n - 1)(n - 2)(n - 3)(n - 4)(n - 5)
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A. 24s + 4 B. 2s + 26t C. 10s + 26t D. 28st
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Use the graph to solve the problem. The graph shows the relationship between the area A of a rectangle and the length L, if the width is fixed. Find the area if the length is 19 cm.
A. 176 cm2 B. 231 cm2 C. 187 cm2 D. 209 cm2
Mathematics