Linear Relationship Review

Write an equation that can be used to describe the relationship between x and y shown in the graph. 

• y=2x

• y=0.5x

• y=-2x

• y=-0.5x

The graph shows how the number of weeks x relates to the corresponding amount of money saved y. Create an equation that represents the relationship

• y=x+30

• y=30x+1

• y=5x+30

• y=30x+5

Determine the constant rate of change between x and y

• 2/4

• 2

• -4

• 1/-4

Tory runs at a constant rate. The graph of his progress is shown. Which statements are true?

• the slope of the line 5/2 mile per minute is different than the unit rate

• the slope of the line 2/5 mile per minute is different then the unit rate

• the slope of the line  5/2 mile per minute is the same as the unit rate

• the slope of the line  2/5 mile per minute is the same as the unit rate

• 4

• 10.75

• 11.75

• 12.75

• 12

• 13

• 14

• 18

Based on the information in the table, which equation can be used to model the relationship between x and y?

• y = 5x

• y = x + 5

• y = x +470

• y = 94x

Clare owns a mobile pet grooming company. She charges $20 to come to your home plus $30 per hour to groom your pet. Which equation models the amount she charges over time?

What function models the relationship between the number of packs of diapers, x, and the total cost, f(x)?

• 
• 
• 
• 

Joe tracked the height of his Dalmatian puppy from age 13 weeks to 25 weeks. He graphed the data and the line of best fit is y = 1.12x + 28.78. How tall was the puppy when he was 20 weeks old?

• 51.18 centimeters

• 86.1 centimeters

• 28.78 centimeters

• 48.78 centimeters