Evaluating Functions Review

Front

Evaluate f(-5) if f(x) = -2x - 12

Back

f(-5) = -2(-5) - 12 = 10 - 12 = -2

Front

Evaluate f(-2) if f(x) = x^2 + 3

Back

f(-2) = (-2)^2 + 3 = 4 + 3 = 7

Front

Is the relation {(1,2), (2,3), (1,4)} a function?

Back

Not a Function (because the input 1 has two different outputs: 2 and 4)

Front

Evaluate f(8) if f(x) = 9 + x

Back

f(8) = 9 + 8 = 17

Front

How would you write y = 2x - 3 in function notation?

Back

f(x) = 2x - 3

Front

What is a function?

Back

A relation where each input has exactly one output.

Front

Evaluate f(0) if f(x) = 3x + 5

Back

f(0) = 3(0) + 5 = 5

Front

What is the domain of the function f(x) = 1/x?

Back

All real numbers except x = 0.

Front

Evaluate f(3) if f(x) = x^2 - 4x + 6

Back

f(3) = 3^2 - 4(3) + 6 = 9 - 12 + 6 = 3

Front

What is the range of the function f(x) = x^2?

Back

All real numbers greater than or equal to 0.