Multiple Representations of Relations

Which equation identifies the relationship in the table?

• y = 2x - 5

• y = -2x + 5

• y = 2x + 5

• y = -2x - 5

A submarine started the day at sea level and then descended at a rate of 1,200 feet per hour. The equation y = -1200x can be used to determine the depth of the submarine. Which table corresponds to the equation?

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Melanie opened a savings account with $50. Each month, she deposits the same amount of money into the account. Which equation shows t, the total amount of money in the savings account after m months? Watch the scale!

• t = 50m + 50

• t = 100m + 50

• t = 150m + 50

• t = 75m + 50

Tim created the following graph during his math class.

Which equation did Tim use to create the graph?

• y = 3x + 5

• y = 3x - 5

• y = -3x + 5

• y = -1/3x + 5

Which rate of change represents the following graph?

• 4 bracelets per girl

• 3 bracelets per girl

• 0.25 bracelets per girl

• 2 bracelets per girl

Which equation matches the graph? 

• y = 3x 

• y = x + 3

• y = ⅓x

• y = x - 3

Which equation matches the table? 

• y = x + 4

• y = 5x

• y = x - 4

• y = x + 16

Which statement below accurately represents the graph?

• $100 is earned for each hour worked

• $100 is earned for every 2 hours worked

• $500 is earned for every 8 hours worked

• $200 is earned for every 4 hours worked

• y = 5x
• y = x + 5
• y = x + 470
• y = 94x 

A 7-inch candle burns at a rate of 2 inches per hour. Which equation represents the relationship between y, the height of the candle in inches, and x, the number of hours the candle burns?

• y = 2x + 7

• y = 7 - 2x

• y = 2 - 7x

• y = 7x + 2