Analyzing Two Variable Relationships

A pizzeria charges $12 per pizza plus an additional $3 for delivery. Which equation represents the cost of having any number of pizzas delivered?

• c = 12p + 3

• c = 12p

• c = 3p

• c = 12 + 3p

Patrick earns $20 for every lawn that he mows. Write an equation used to find t, the total amount of money he earns from mowing n lawns.

• n = 20t

• t = 20n

• t = n + 20

• t = n - 20

Nancy can type 50 words per minute. Look at the table below to write an equation that matches the data.

• m=50 + w

• w= 50m

• w= 50 + m

• m= 50 - w

In this graph, the coordinate point (2,10) means which of the following?

• 2 km for every 10 minutes

• 10 km for every 2 minutes

• 10 km per minute

• (2,10) is not plotted on this graph

Which equation matches the table?

• y = 2x

• y = 2x+3

• y = 3x+3

• y = 3x+2

Which equation best represents the relationship in this table?

• y = 9.6x

• y = 10.6x

• y = 9.6

• y = x + 9.6

• A

• B

• C

• D

• y = 3x

• y = 3 + x

• y= x + 6

• x = 3y

• A

• B

• C

• D

• A

• B

• C

• D