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What is the starting point of (f(x)=\sqrt{x+6}-2)?

Answer and explanation

Correct answer: ((-6,-2))

The direct answer is A, \((-6,-2)\). The basic square-root graph \(y=\sqrt{x}\) starts at \((0,0)\), because its input cannot be negative and \(\sqrt0=0\). In \(y=\sqrt{x+6}-2\), require \(x+6\ge0\), so the first possible x-value is \(-6\). At x=−6, \(y=\sqrt0-2=-2\). Therefore the starting point is \((-6,-2)\). Option A is correct. Option B, \((6,-2)\), uses the wrong horizontal sign; x+6 shifts left, not right. Option C, \((-6,2)\), has the vertical sign wrong because the outside −2 moves the graph down. Option D, \((0,-2)\), ignores the horizontal shift and is not the endpoint. Remember: \(\sqrt{x-h}+k\) starts at \((h,k)\).

Related tags

Standard-FunctionsSquare-Root-GraphStart-Point

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