Review Linear Relationships

What is the equation for this line?

• y = x - 2

• y = x + 2

• y = 2x

• y = -x + 2

Which of the following is in slope-intercept form?

• y=10x-7

• y-5=3(x-1)

• 5x-y=12

• 6x+2y-15=0

Which equation matches the table?

• y = x + 5

• y = 5x

• y = x - 5

• x = y - 5

What is the equation for the table?

• y =1/4x -3

• y =4x - 3

• y = -3x -3 

• y =-2x -3 

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?

What does the y-intercept represent in this graph?

• Every minute 60 students got off the bus.

• There were 60 students to start with on the bus ride. 

• Each minute, 10 students got off the bus. 

• 60 students rode the bus every minute. 

A camp charges families a fee of $625 per month for one child and a certain amount more per month for each additional child. Use the graph to write an equation in slope-intercept form to represent the amount a family with x additional children would pay.

• y = 625x + 225

• y = 225x 

• y = 225x + 625

• y =  625

What is the rate of change for the following graph?

• 80

• 20

• 40

• 160

Write the equation for the line.

• y= -1x+3

• y= 4x+3

• y=1/4x+3

• y= -4x+3