How do you find the range of #f(x) = -x+4# for the domain #{-3 , -2, -1, 1}#?

1 Answer
smendyka
Jul 6, 2017

See a solution process below:

Explanation:

The Domain normally represents the #x# values in an equation. Therefore, to find the range (which normally represents the #f(x)# values in an equation) we need substitute each value in the Domain and solve for #f(x)#. The set of answers obtained will for the Range:

For #x = -3#: #f(-3) = -(-3) + 4 = 3 + 4 = 7#

For #x = -2#: #f(-2) = -(-2) + 4 = 2 + 4 = 6#

For #x = -2#: #f(-1) = -(-1) + 4 = 1 + 4 = 5#

For #x = -2#: #f(1) = -1 + 4 = 3#

Range = {7, 6 , 5 , 3}

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