Algebra 1 Function Notation (Unit 4)

Function d gives the distance of a boat from the dock t seconds after leaving the dock. Distance is measured in meters. Here is a graph that represents d.

Select the TRUE statement.

• d(40) < d(160)

• d(40) = d(70)

• d(0) > d(120)

• d(40) = 70

Function d gives the distance of a boat from the dock t seconds after leaving the dock. Distance is measured in meters. Here is a graph that represents d.

Select the FALSE statement.

• d(40) = 40

• d(40) = d(60)

• d(120) > d(170)

• d(40) < d(70)

Function d gives the distance of a boat from the dock t seconds after leaving the dock. Distance is measured in meters. Here is a graph that represents d.

Which gives an output of 50?

• d(50)

• d(40)

• d(90)

• None of the above.

Function A gives the area of a square with a side length of s. The side length is measured in centimeters.

What does the expression A(3) represent in this situation?

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Function A gives the area of a square with a side length of s. The side length is measured in centimeters.

What does the expression A(5) = 25 represent in this situation?

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Function P gives the number of people at a museum, h hours after it has opened.

What does the expression P(6) = 2 represent in this situation?

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Is the following set of a values a function?

• Yes, because every input has exactly 1 output.

• Yes, because every output has exactly 1 input.

• No, because there is an input with more than 1 output.

• No, because there is an output with more than 1 input.

The school cafeteria has 285 cartons of milk in stock. Each day, a total of 60 cartons are sold. Which function rule best represents this the number of cartons of milk the school has after x days?

• f(x) = 285 + 60x

• f(x) = 285x + 60

• f(x) = 285x - 60

• f(x) = 285 - 60x

If the function rule is "Subtract 8 and then divide by 2", what is the output when the input is 6?

• -5

• 1

• -1

• 5

Function C gives the cost of x pounds of potatoes.. Which statement represents the meaning of the equation C(5..3) = 6

• The cost of 6 pounds of potatoes is $5.30.

• The cost of 5.3 pounds of potatoes is $6.00.

• 6 potatoes will cost $5.30.

• 5.3 potatoes will cost $6.00.