Linear Equations

Paul the plumber charges $25 for a service call.  He then charges $100 an hour.  Write a linear equation to model this situation.

• y = 100x

• y = 25x

• y = 25x + 100

• y = 100x + 25

The solution to this system is:

• No solution

• (0, 1)

• (0, -2)

• (4, 3)

A function of x containing 4 ordered pairs is shown. Determine the domain of the function

• {3, 5, 7, 9}

• {0, 2, 4, 6}

• {0, 3, 5, 7}

• (3, 0)

What is the slope in the picture?

• Positive

• Negative

• Zero

• Undefined

Two 8th grade classes are selling raffle tickets to raise money.  
One class is selling tickets for $2.50 each and has already raised $350.
The other class is selling tickets for $3.00 each and has already raised $225.
Which equation can be used to find t, the number of tickets each class needs to sell so that the total amount raised is the same for both classes?

• 3t + 350 = 2.50t + 225

• 350t + 2.50 = 225t + 3

• 2.50t + 350 = 3t + 225

• not here

Solve for v.

• 60

• -3

• 15

• 3

A rental company at Best Bargain Rental costs $150 a week, plus $0.10 per mile.  Which equation represents the relationship between the number of miles (x) and the total cost in dollars (y) for a 2- week period?

• y = 2(150)(0.10x)

• y = 2(150) + 0.10x

• y = 150 + 2(0.10x)

• y = 2(150 + 0.10x)

Solve the equation: 3x = 15

• x = 3

• x = 10

• x = 7

• x = 5

Solve the equation: 2y + 5 = 11

• y = 2

• y = 3

• y = 7

• y = 5

Use inverse operations to solve the equation: 4a - 7 = 25

• a = 8

• a = 12

• a = 10

• a = 5