Linear Relationships Mixed Review

What is the y-intercept?

• 12

• -3

• 8

• 0

• 14 ft/yr

• 3 ft/yr

• 7 ft/yr

• 10 ft/yr

• 200

• 400

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

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?

• $100 per deposit

• $50 per deposit

• $0.50 per deposit

• $2 per deposit

What is the rate of change of y with respect to x?

What is the y-intercept of the line?

What is the coordinate pair is the solution for both equations on the graph?

• (3,2)

• (-2,3)

• (2,3)

• (-3,2)