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Evaluating Piecewise Functions · Easy Worksheet 1

Evaluating Piecewise Functions — Easy Worksheet 1

Grade 12 · MathSheets    Name: ____________________   Date: __________

Evaluate the function at the given value of x.

How to solve

Compare the given x-value with each condition to choose the correct piece. Substitute x into only that piece and simplify.

Example

f(x) = -x - 3 if x < 4; f(x) = 2x + 2 if x ≥ 4. Find f(1).

Answer: -4

right so far
1. f(x) = -3x + 2 if x < 3; f(x) = -2x if x ≥ 3. Find f(6).
2. f(x) = 3x - 1 if x < -1; f(x) = -x + 1 if x ≥ -1. Find f(-3).
3. f(x) = -2x + 1 if x < 4; f(x) = 2x + 2 if x ≥ 4. Find f(2).
4. f(x) = -x - 2 if x < -1; f(x) = 2x + 3 if x ≥ -1. Find f(2).
5. f(x) = -2x + 3 if x < -2; f(x) = 3x + 3 if x ≥ -2. Find f(-6).
6. f(x) = 2x - 1 if x < 0; f(x) = x - 2 if x ≥ 0. Find f(-4).
7. f(x) = -3x + 2 if x < 2; f(x) = -2x + 1 if x ≥ 2. Find f(3).
8. f(x) = -x - 2 if x < -1; f(x) = -x - 2 if x ≥ -1. Find f(2).

/ right