Understanding Linear Equations

What is the algebraic expression for the distance covered by the space shuttle in t seconds?

• d = 5 + t

• d = 5t

• d = t/5

• d = 5t + 5

How would you describe the relationship between time and distance in the space shuttle example?

• The distance is the time plus five

• The distance is half the time

• The distance is five times the time

• The distance is the square of the time

What is the equation to find the total cost of tickets if each ticket costs $4.50?

• C = 4.50 + T

• C = T/4.50

• C = 4.50T

• C = 4.50T + 4.50

If 15 tickets are purchased, what is the total cost?

• $67.50

• $45.00

• $60.00

• $75.00

What is the slope of the line representing the number of trees saved per ton of paper recycled?

• 0

• 34

• 17

• 1

How many trees can be saved if 500 tons of paper are recycled?

• 8,500

• 5,000

• 17,000

• 1,700

What is the equation for the total cost of a gym membership with a $10 annual fee and $9.50 per visit?

• y = 10x - 9.50

• y = 9.50x - 10

• y = 10x + 9.50

• y = 9.50x + 10

How much does Paul earn if he works 8 hours at $7.50 per hour?

• $60.00

• $52.50

• $75.00

• $45.00

What is the independent variable in the equation for Paul's earnings?

• Hourly rate

• Total cost

• Earnings

• Hours worked

What is the purpose of a break in a graph?

• To indicate a change in slope

• To highlight data points

• To save space

• To show a continuous line