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Multiple Choice
Is the equation y2+2x=10 a function? If so, rewrite it in function notation and evaluate at f(−1).
A
f(−1)=12, Is A Function
B
f(−1)=12, Is A Function
C
f(−1)=29, Is A Function
D
Is NOT A Function
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Verified step by step guidance
1
Step 1: Begin by examining the given equation y^2 + 2x = 10. To determine if this is a function, recall that a function must have only one output (y-value) for each input (x-value).
Step 2: Consider the equation y^2 + 2x = 10. Rearrange it to isolate y^2: y^2 = 10 - 2x.
Step 3: Notice that y^2 = 10 - 2x implies y = ±√(10 - 2x). This indicates that for each x-value, there are potentially two y-values (one positive and one negative), which violates the definition of a function.
Step 4: Since the equation y^2 + 2x = 10 can produce more than one y-value for a given x-value, it is not a function.
Step 5: Therefore, the equation y^2 + 2x = 10 is not a function, and it cannot be rewritten in function notation or evaluated at f(-1).