6.6C Review

6.6C Review

Remember we usually model equations in the form y = kx

where:

x is the input

k is the constant/ multiplier

y is the output

Multiple Choice

Which situation can be represented by the equation y = 12x

• Victoria went to school for x years. This is 12 times y, the number of years her brother went to school.

• Victoria spent x dollars to buy a gift for her brother. She gave the cashier y dollars and received $12 in change.

• Victoria has y dollars. This amount is 12 times x, the amount of money in dollars Victoria's brother has.

• Victoria is 12 years greater than x, her brother's age in years.

Multiple Choice

Review the graph. Which situation best describes the relationship between all the values of x and y in the table?

• Rachel had six dollars and then started to save one dollar each week.

• Beatriz ran one mile the first week and one mile each week after that

• James read zero books in six months and then started to read one book each week.

• Marion has six times the number of toy trains that Tony has.

Multiple Choice

The cost of downloading one song from a website is $0.99, Which equation can be used to find t, the cost in dollars of downloading n songs.

• t = 0.99 + n

• n = 0.99 + t

• t = 0.99n

• n = 0.99t

Multiple Choice

A firefigther uses equipment that weighs 60 pounds. The firefighter weighs x pounds. Which equation can be used to find t, the total weight of both the firefighter and his equipment in pounds?

• t = 60x

• t = x + 60

• t = 60 - x

• t = x- 60

Multiple Choice

Which situation can be represented by the equation y = 74x?

• A company uses a total of y gallons of water at a rate of 74 gallons for x hours.

• A restaurant serves a total of y meals in one day, in which 74 meals are served during the first hour and x meals are served during the remaining hours.

• A company manufactures a total of 74 drinking glasses every hour, with x of the glasses made of clear glass and y of them made of blue glass.

• A restaurant prepares a total of y batches of pizza sauce from 74 pounds of tomatoes, with each batch weighing x pounds.