In the function y = 2x + 3, this variable represents the independent variable

True or False: All functions are relations.

Hedda has a recipe for rolls that requires 2 cups of flour. The recipe makes 12 rolls. If Hedda needs to buy enough flour to make 42 rolls, what proportion can she use to find c, the number of cups of flour to buy?

The graph of the equation y= 3x + 25 passes through the y-axis at this point.

The cost, c(n), of purchasing n pairs of shoes online is represented by the function below.


c(n) = 49.79n + 8.99


This cost function represents the fact that each pair of shoes costs —

In the function f(x) = 2x + 3, this represents the dependent variable.

One way to determine that a relation is NOT a function is to perform this test.

The senior class at Eastside High School is getting class T-shirts printed. The silkscreening company that makes the shirts charges $8.25 per shirt and a one-time fee of $38 to make the silkscreen. If the senior class has budgeted $4,500.00 for the T-shir

The equation y=x is this type of parent function.

Cato went to eat at Zen’s Pizza Parlor with some friends. He used a coupon which deducts c dollars from the original cost of the pizza. Cato’s meal cost $11.60, and he is trying to determine the cost of tax on the meal. He used the equation T = .15 (11.60

George is collecting data comparing how much professional baseball teams pay their players to how many games they win. When George draws a scatterplot, this variable should be used as the independent variable.

One way to determine that a relation is NOT a function is to look at the x values of the relation and see that they do not do this.

A fashion designer buys a shipment of fabric for f dollars. The designer can make 30 dresses from the fabric and sell each dress for d dollars. If the designer sells all 30 dresses, this equation represents how many dollars of profit has she earned.

Dividing by a negative number when solving an inequality does this to the inequality sign.

Mr. Guerra is driving a company car on a road trip. He expects to reach his final destination in a total of four days. The equation shown below shows that d, Mr. Guerra's distance in miles from his home on the second day of a road trip, depends on h, the

Jill is collecting data comparing the ages and heights of students. When she draws a scatterplot of this data, this variable should be used as the dependent variable.

The following set of points represent a relation.
(2, 3) (3, 4) (4, 5) (5, 6)

They also represent this.

Regal Rental charges a base fee of $50, plus $25 per day to rent a 52-inch flat screen HD television set.

This function represents the cost of renting the television, y, as a function of the number of days the television will be rented, x.

Al's Movies charges $7.00 for a membership and $1.00 per each movie rental. Beth's Videos has no membership fee and charges $2.75 per movie rental. This is the number of movies that would have to be rented for cost to be equal between membership and non-m

The fuel tank on Jacob's truck can hold 25 gallons and his vehicle can travel 15 miles per gallon. Patsy's mid-sized car can hold 20 gallons and her vehicle can travel 25 miles per gallon.

This person gets the best gas mileage.

Frankie is collecting data comparing the age of racecar drivers to the number of races they've won. When he draws a scatterplot of this data, this variable should be used as the independent variable.

True or False:
A relation is always a function

Terri is starting a baby-sitting service to make some extra money. She plans to charge a base fee of $10 plus $7 per hour. This function could be used to represent her total fee, y, as a function of number of hours, x.

A weather balloon is launched in Texas from an altitude of 240 feet above sea level. If the balloon rises at a constant rate of 65 feet per minute, find the equation that could be used to find t, the time in minutes it will take the balloon to reach an a

The cost, in dollars, of new aluminum ladders at a home improvement store is estimated by multiplying the length of the ladder, in feet, by 4.5 and then adding $15.

This equation could determine the total cost of an f- foot letter.