STAAR Review: Linear Relationships

The amount of money earned on a job varies directly to the number of hours worked. If $70.00 is earned in 5 hours, how much money is earned in 22 hours of work?

• $2

• $308

• $1.57

• $265

Chelsea charges $10.50 for each hour she babysits plus a trip fee of $11. Which equation best represents the relationship between the number of hours of babysitting, x, and the total amount she will charge, y?

• y = 11x + 10.50

• y = 21.50x

• y = 10.50x + 11

• y = x + 21.50

Michael can swim 5 miles in 50 minutes. Which graph has a slope that best represents Michael’s average rate of speed?

• F

• G

• H

• J

Greyson’s teacher gives tickets as rewards. Every student starts out with 5 tickets. Greyson earns 3 tickets for every day he has his daily folder. Which table shows the relationship between the number of days and the total number of tickets Greyson earns?

• A

• B

• C

• D

Johnathan paid $2.52 for 6 oranges. Each orange costs the same amount.

Which function can be used to find the total cost in dollars, c, for purchasing n oranges?

• c = 0.42n

• c = 2.52n

• c = 6n

• c = 15.12n

Ricardo earns $60 for walking 8 dogs. He earns the same amount of money for each dog he walks. Which table best represents the relationship between the number of dogs Ricardo walks and the amount of money he earns?

• F

• G

• H

• J

The graph of a linear function is shown on the grid. Create an equation that represents the relationship shown on the graph.

y = ​ ​ (a)   x + ​ (b)  

• -4

The graph of a linear function runs through the points (-2, 70) and (6, -50). Which equation represents the function?

The table shows a linear relationship between x and y.

Create an equation that describes the relationship shown in the table.

y = ​ (a)   x + ​ ​ (b)   ​

• -3
• -4
• 3
• 4

The graph shows a relationship between x and y.

Select the correct statement from each drop-down.

The graph shows a ​ (a)   relationship because the graph ​​ (b)   .

• non-proportional
• proportional
• does not contain the origin
• contains the origin