VERTICAL LINE TEST AND VARIABLES

Is this graph a function or not a function? 

• Function
• Not a Function 

Is y a function of x?

• function

• not a function

• It is a function.

• It is not a function.

What is the range of the relation in the diagram? 

• {–4, –3, 2, 5} 

• { p, q, r, s, t }

Identify the independent and dependent variable in the situation.

A company charges $10 per hour to rent a jackhammer.

• Dependent variable: cost

  Independent variable: time

• Dependent variable: time

  Independent variable: cost

Molly investigated if the age of students caused them to be better drivers. What is the independent variable?

• Type of car
• Skill of driving
• Age of student

Sophie earned Php 500 for every 90 she got on her report card.

The dependent variable is:

• money

• number of 90s on Sophie's report card

Identify the independent and dependent variable in the following scenario.

A farmer measures the yield of crops based on the amount of fertilizer used.

• Dependent variable: yield

  Independent variable: fertilizer

• Dependent variable: fertilizer

  Independent variable: yield