Comparing Equations from Graphs

Two photographers offer different pricing plans for their services. The graph below models the prices Photographer A charges. The table below shows the prices Photographer B charges. Each photographer charges a one-time equipment fee and an hourly rate. Which of the following statements is true.

• Photographer A charges $15 per hour more than Photographer B.

• Photographer B charges $15 per hour more than Photographer A.

• Photographer A’s equipment fee is $25 less than Photographer B‘s.

• Photographer B’s equipment fee is $25 less than Photographer A‘s.

• The cruising speed of airplane C is less than the cruising speeds of both airplanes A and B.

• The cruising speed of airplane C is greater than the cruising speeds of both airplanes A and B.

• The cruising speed of airplane C is greater than the cruising speed of airplane A and less than the cruising speed of airplane B.

• The cruising speed of airplane C is less than the cruising speed of airplane A and greater than the cruising speed of airplane B.

Kevin and Christy both saved money for their class trip. Kevin saved the same amount each week. The total amount that Kevin saved at the end of every two weeks is shown in the table below. Christy’s savings can be modeled by the equation y=26x, where y is the total amount of money saved in x weeks. Which statement correctly compares the rates at which Kevin and Christy saved money?

• Christy saved $3 per week more than Kevin.

• Kevin saved $10 per week more than Christy.

• Christy saved $18 per week more than Kevin.

• Christy saved $18 per week more than Kevin.

Which equation matches the graph? (Click me to see the image)

• y = 2x

• y = 1/4 x + 2

• y = 1x + 4

• y = -2x

What is the equation of the straight line shown in the diagram?

• y = -2.5x - 5

• y = 2.5x - 5

• y = -3x - 5

• y = 3x - 5

Write the equation of the line.

Mathematical Equivalence

ON

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What is the equation of this line?
_{(in the form y = mx + c)}

• y = -3x + 2

• y = 2x - 3

• y = 2x + 3

• y = -2x - 3

Write the equation of the line.

Mathematical Equivalence

ON

Write the equation of the graph

• y = 3x + 2

• y = -3x + 2

• y = 1/3x + 2

• y = -1/3x + 2