Function Notation and Tables

f(x) is the same thing as ______.

• y

• x

• input

• an equation

• TV channel

Given the graph, find:

• Function
• Not a Function

What does H(5) =18 mean in the context of the problem?

• The height of the plant after 5 weeks is 18 inches

• The height of the plant after 18 weeks is 5 inches

• The height of the plant is 5 inches after 18 weeks

• The height of the plant is dependent on the week it was planted

Given this table of the function f(x), what is the independent variable?

• Number of weeks

• Pounds of soil

Given this table of the function f(x), what is the dependent variable?

• Number of weeks

• Pounds of soil

Given this table of the function f(x), find x when f(x)=15 and explain what it means in context.

• f(1) = 15 means the farmer increases his soli by 15%

• f(15) = 1 means after 15 weeks the farmer has 1 pound of soil.

• f(1) = 15 means after 1 week the farmer has 16 pounds of soil.

• f(1) = 15 means after 1 week the farmer has 15 pounds of soil.

What does f(1990)=214 mean in the context of the problem?

• In 1990 there were 214 million people with health insurance

• In 214, there were 1990 people with health insurance

• When there are 1990 people, the year is 214

• None of these

Translate the following statement into an ordered pair:

f(2) = -3

• (-3, 2)

• (2, -3)

• (f(2), -3)

• (-3, f(2))

The math club goes to an amusement park. Student tickets cost $10 each. The bus costs $28. This is expressed as f(x) = 10x + 28. Find f(10) and explain what it means.

• f(10) = 100; It costs $4100 for 10 students to go on the trip.

• f(10) = 128; It costs $128 for 10 students can go on the trip.

• f(128) = 10; It costs $10 for 128 students to go on the trip.

• f(10) = 128; It costs $10 for 128 students can go on the trip.