Linear Equations in Real World

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

Based on the table, write the equation in slope intercept form.

• y= 5x+5

• y=1/5x+5

• y=15x+5

• y=10x+5

Given the following table, write the linear equation.

• y = 2x + 7

• y = 4x + 7

• y = 2x + 5

• y = -2x + 5

Scoots Inc. charges $20 to rent a moped for the day and $0.50 per mile driven

What is the rate of change (can happen more than once)?

• 20

• 0.50

Scoots Inc. charges $20 to rent a moped for the day and $0.50 per mile driven

What is the expression that represents the cost of the rental?

• y = 20x + 0.50

• y = 0.50x + 20

Scoots Inc. charges $20 to rent a moped for the day and $0.50 per mile driven

What is the b (one-time/beginning value)?

• 20

• 0.50

For lunch, Amanda had a hamburger and some potato chips. The hamburger totaled 325 calories and each chip had 12 calories. Write a linear equation to represent the situation.

• y = 12 + 325

• y = 12x  + 325

• y = 325 - 12x

• y = 325x + 12

Ms. Deppe has $150 in her savings account and saves $40 per month. Which equation represents the amount of money (y) Ms. Deppe has in her account after (x) number of months?

• y=150+40

• y=150x+40

• y=40x+150

Which equation shows the number of bottles left after x days?
A family buys a case of water with 48 bottles and drinks 5 bottles per day.

• y = 48x + 5

• y = -5 + 48x

• y = -5x - 48

• y = 48 - 5x

What is the equation for the line that passes through the points (4,2) and (0,6)?

• y = x + 6

• y = -2x + 2

• y = -x - 6

• y = -x + 6