Question 937940
{{{f(x) = sqrt(3x-12)}}}
{{{f(9) = sqrt(3(9)-12)}}}
{{{f(9) = sqrt(27-12)}}}
{{{f(9) = sqrt(15)}}} Exact value
{{{f(9) = 3.872983}}} Approximate value
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{{{f(x) = sqrt(3x-12)}}}
{{{f(4) = sqrt(3(4)-12)}}}
{{{f(4) = sqrt(12-12)}}}
{{{f(4) = sqrt(0)}}}
{{{f(4) = 0}}}
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{{{f(x) = sqrt(3x-12)}}}
{{{f(1) = sqrt(3(1)-12)}}}
{{{f(1) = sqrt(3-12)}}}
{{{f(1) = sqrt(-9)}}} This result is NOT a real number since you have a negative under the square root. The answer is "does not exist" (assuming you haven't learned about complex/imaginary numbers yet).
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{{{f(x) = sqrt(3x-12)}}}
{{{f(-1) = sqrt(3(-1)-12)}}}
{{{f(-1) = sqrt(-3-12)}}}
{{{f(-1) = sqrt(-15)}}} This result is NOT a real number since you have a negative under the square root. The answer is "does not exist" (assuming you haven't learned about complex/imaginary numbers yet).
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