EDGE Math 8

Determine whether each statement is true or false. Choose the correct answer.

1.	The domain of $\frac{x - 3}{3}$ is the set of real numbers except 3.

True

False

Answer: False; its domain is the set of all real numbers.

2.	The domain of $\frac{2 x}{x^{2} - 100}$ is the set of real numbers except 10 and −10.

True

False

Answer: True

3.	The domain of $\frac{1}{x (x - 6)}$ is the set of real numbers except 6.

True

False

Answer: False; its domain is the set of real numbers except 6 and 0.

4.	The domain of $\frac{x - 5}{x^{2} - 5 x - 6}$ is the set of real numbers except 1 and –6.

True

False

Answer: False; its domain is the set of real numbers except –1 and 6.

5.	The domain of $\frac{x^{2} - 9}{4 x^{2} - 16}$ is the set of real numbers except –2 and 2.

True

False

Answer: True

6.	The domain of $\frac{x - 5}{x + 5}$ is the set of real numbers except –5.

True

False

Answer: True

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