Writing Linear Equations from Multiple Representations

• y=5.47x

• y=4.39x

• y=0.55x+3,150

• y=3,150x+0.55

• y=6x

• y=30x

• y=5x+30

• y=6x+30

What is the equation of the linear function?

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

A water tank currently contains 275 gallons of water. The amount of water in the tank will decrease at a constant rate of 15 gallons per week.

Which function can be used to find t, the total number of gallons of water in the tank after w weeks?

• t=15w-275

• t=-15w+275

• t=275w-15

• t=-275w+15

The graph of a linear function passes through the points (-1, -1/4) and (1, -3/4).

Write an equation that represents the function.

A coach is ordering shirts for a team. The coach pays a one-time fee of $24. The coach also pays $8 for each shirt ordered. Write an equation that represents c, the total amount the coach pays in dollars when k shirts are ordered.

• y=3,000x+12,000

• y=3,000x+15,000

• y=-3,000x+12,000

• y=-3,000+15,000

• y=20x-30

• y=-1/6x+240

• y=240x-10

• y=-1/10x+240

Melissa is saving $25 that she earned for washing her mom's car. She earns $10 every week for doing chores, which she also saves.

Which function can be used to find t, the amount of money Melissa will have saved at the end of n weeks of doing chores?

• t=10n+25

• t=25n+10

• t=35n

• t=15n

• y=1/4x+8

• y=1/4x-2

• y=4x-2

• y=4x+8