Open Up Unit 3 Linear Relationships

Which table contains only values that satisfy the equation

y = 0.5x + 14?

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What is the y-intercept in the following equation:  y=-4x-5

• -4

• -4x

• 5

• -5

The table shows the relationship between y, the cost to rent a boat, and x, the amount of time the boat is rented. Which graph best represents the relationship between x and y shown in the table? (7.7A)

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Calculate the average rate of change from 20 to 40 minutes.

• -2 minutes per gallon

• -20 minutes per gallon

• -2 gallons per minute

• -20 gallons per minute

Which statement below accurately represents the graph?

• $100 is earned for each hour worked

• $200 earned for every 2 hours worked
  is the unit rate

• $500 is earned for every 8 hours worked

• $300 is earned after working 4 hours

What is the slope of the line with the equation y = 4x + 12

• 4

• 1/4

• -4

• -1/4

Find the slope of the line that passes through
(1, -19) and (-2, -7)

• -4

• 4

• 1/4

• -1/4

Find the slope. 

• -2

• 2

• -1/2

• 1/2

For the straight line y = -2x + 3, what are:

a) the slope

b) the y-intercept?

• a) Slope = 2

  b) y-intercept = -3

• a) Slope = -2

  b) y-intercept = 3

• a) Slope = 3

  b) y-intercept = -2

• a) Slope = -3

  b) y-intercept = 2

What is the equation of the following line?

• y = 3/4x + 2

• y = 1 1/3x + 2

• y = -3/4x + 2

• y = -1 1/3x + 2