Determine If the Equation Specifies a Function with Independent Variable

question 118

Multiple Choice

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 = -7

• A) A function with domain all real numbers except x = 0
• B) Not a function; for example, when x = -7, y = ±1

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