Constructing Linear Functions

What is the equation for this graph?

• y = -3/7x + 4

• y = -7/3x + 4

• y = -3/7x + 10

• y = -7/3x + 10

Abby decides to get a magazine subscription. It costs her $2 per magazine plus an initial fee of $3. Define the variables

• y=the cost, x=the number of magazines

• y=the number of magazines, x=the cost

Bob has $150 in his savings account and saves $40 per month. Which equation represents the amount Bob has in his account after x months?

• y = 150 + 40

• y = 40x + 150

• y = 150x + 40

What is the apparent slope of the line shown in the graph?

• 2

• -2

• 1/2

• -1/2

What is the slope of the following table?

• -10

• 10

Find the equation using the table

• y= -4x-5

• y-4x=5

• y=-4x+5

Abby decides to get a magazine subscription. It costs her $2 per magazine plus an initial fee of $3. Define the parameters.

• m= $2 per magazine, b= the initial fee of $3

• m= the initial fee of $3, b=$2 per magazine

The local service center advertises that it charges a flat fee of $50 plus $8 per mile to tow a vehicle. Write an equation that represents the total cost (C) of a service for m miles of towing.

• y = 8x + 50

• C = 50m +8

• y = 50x + 8

• C = 8m + 50