Review

Which set of ordered pairs represents a function?

Which of the following relations are also functions?

• III only

• I and III only

• II and IV only

• I, II, and IV only

• $108

• $500

• $780

• $970

A relation associates five foods to the food groups to which they belong:

{ (orange, fruit), (cheese, dairy) (broccoli, vegetable) (milk, dairy) (kiwi, fruit) }

Which statement is true?

• Vegetable is an element in the domain.

• Orange is an element in the domain.

• This relation is not a function.

• Kiwi is an element in the range.

Determine the slope of this line segment.

Determine the slope of the line that passes through G(3, –3) and H(–5, 9).