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boyakko [2]
3 years ago
9

How do you find the domain of a linear grap

Mathematics
2 answers:
Shalnov [3]3 years ago
6 0
Finding the domain of a function from its rule is not difficult. Look at the examples below carefully.

1) Give the domain of each.

a) f(x) = 3/(x - 5) The domain consists of all numbers for x that are defined for the function. Since the function doesn't exist at x = 5 ( it makes the denominator 0), the domain is all real numbers but 5.

b) f(x) = Since 4 - x is under the radical, 4 - x must be greater than or equal to zero, otherwise the answers will be imaginary. To find the domain, solve the inequality 4 - x > 0.
-x > -4
x < 4. Thus, all numbers less than or equal to 4 represent the domain for this function.
IceJOKER [234]3 years ago
4 0
The domain is all possible x values. For linear graphs, the domain is usually all real numbers.
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