Evaluating Functions with Graphs, Tables, Equations

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Evaluate f(2).

• f(2) = 5

• f(2) = 12

• f(2) = 10

• f(2) = 0.5

Evaluate f(6).

• f(6) = 18

• f(6) = 12

• f(6) = 10

• f(6) = 1

What is the value of x when f(x) = 16?

• x = 4 only

• x = 4 and x = 8

• x = 16

• Not on the graph

Which spot correctly uses the graph to evaluate f(-6)

Answer explanation

f(-6) means the input (x-coordinate) is -6

Use the graph to evaluate the expression.

f (2) = ?

Mathematical Equivalence

OFF

Use the graph to evaluate the expression.

f (-2) = ?

Mathematical Equivalence

OFF

Which spot correctly uses the graphs to evaluate if f(x)=4, what is x?

Answer explanation

f(x)=4 means 4 is the output (y-coordinate)

What is x when f(x) = -2 ?

Mathematical Equivalence

ON

What is x when f(x) = -2 ?

Mathematical Equivalence

ON