What do you know about Linear Functions

Who has a greater rate of change? (slope)

• Smith

• Harmon

• Macey

• None of the above

Andy has $310 in his account. Each week, w, he withdraws $30 for his expenses. Write a linear equation to represent the scenario.

• f(x) = -310w + 30

• y = -30w + 310

• y = 30w + 310

• f(x) = -30x + 310

What is the equation of the line whose slope is -1 and whose y – intercept is -5?

The linear function 4x - 2y = -16 written in y = mx + b is:

What is the y-intercept?

• 7
• 0
• 1
• 2

Andy has $310 in his account. Each week, w, he withdraws $30 for his expenses. Write a linear equation to represent the scenario.

• f(x) = -310w + 30

• y = -30w + 310

• y = 30w + 310

• f(x) = -30x + 310

The table above shows the cost of different numbers of goldfish at a pet store.

• The cost increases $0.30 each time 1 goldfish is added.

• The cost increases $1.50 each time 1 goldfish is added.

• The cost increases $3.00 each time 5 goldfish are added.

• The cost increases $6.00 each time 5 goldfish are added.

Mr. Cook is saving money in an account. At the beginning of the year, he has $56 in savings and puts in another $4 per week. Write a function f(x) that models the total amount in the savings account after x, weeks.

Helpful tip f(x) is the same as (y).

• f(x) = 56 + 4x

• f(x) = 56x + 4

• y = 4x + 56

• y = -56 - 4x

What is the equation of the linear function?

• y = -3x + 10
• y = -3x + 16
• y = 3x + 10
• y = 3x + 16

An online clothing company sells custom sweatshirts. The company charges $4.99 for shipping plus $6.50 for each sweatshirt. Which Equation describes this situation?

• y = $4.99x +$6.50

• y = $6.50x - $4.99

• y = $6.50x + 4.99

• y = $4.99x - $6.50