Module 4 Linear Relationships

Find the slope:

• 2/1

• -2/1

• 1/2

• -1/2

Find the slope of the line that passes through the points (2, 4) and (6, 12)

• 1/2

• -1/2

• 2

• -2

Find the slope of the line that passes through
(10, 1) and (5, 2)

• 1/5

• -1/5

• 5

• -5

What is the solution to the system?

• (6, 8)

• (8, 6)

• (-6, 8)

• No solution

^{What is the solution?} 

• 1

• -2

• (1, 2)

• (1, -1)

This table shows a proportional relationship.

Which ordered pair could also belong to this relationship?

• (-6,21)

• (-1,-3)

• (1,3)

• (6,21)

Use this situation for question 3 and 4.

On a two-week job, a repairman works a total of 70 hours. He charges $75 plus $40 per hour. An equation shows this relationship, where x is the number of hours and y is the total fee.

Which number is the slope of the line shown by the equation?

• 14

• 40

• 70

• 75

On a two-week job, a repairman works a total of 70 hours. He charges $75 plus $40 per hour. An equation shows this relationship, where x is the number of hours and y is the total fee.

Which number is the y-intercept?

• 14

• 40

• 70

• 75

Which statement cannot be true of the graph of a proportional relationship?

• It is not linear.

• It is a straight line.

• It includes the origin.

• It shows a constant ratio.

Which equation shows a proportional relationship?