Question

Find the range of the function f(x) = 4x - 7,

if the domain is {-5, -1, 3, 8).
Enter values from lowest to highest.

Answer 1

range: {-27, -11, 5, 25}

Explanation:

Evaluating the function for the given domain values gives the range values ...

{-27, -11, 5, 25}

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For example, 4(-5)-7 = -20-7 = -27.

It's a matter of doing the arithmetic. A spreadsheet or calculator that works with lists can be helpful.