Functions Review

The graph represents the amount of snow, S, in inches as a function of time, t, in hours on a snow day.

Match each statement with the correct function notation.

• The amount of snow at 7 hours is 0 inches.

• The amount of snow at 2 hours is greater than the amount of snow at 5 hours.

• The amount of snow at 7 hours is less than the amount of snow at 1 hour.

• The amount of snow at 6 hours is equal to the amount of snow at 4 hours.

• The amount of snow at 6 hours is 3 inches.

Find f(4).

f(4) =

Find f(x) = 5.

Hint: Since f(x) = y, find x when y is 5.

Identify the function's x- and y-intercepts.

• x-int (3,0) and y-int (0,1)

• x-int (0,3) and y-int (1,0)

• x-int (1,3) and y-int (3,1)

• x-int (3,0) and y-int none

Find the function's x- and y-intercepts.

• x-int (0,-3) and (0,1)

  y-int (-4,0)

• x-int (-3,0) and (1,0)

  y-int (0,-4)

• x-int (-4, 1)

  y-int (-4, ∞)

• x-int (-3,0) and (1,0)

  y-int (0,-3)

What was the initial height of the projectile?

• 50

• 0

• 200

• 6.75

What is the maximum height?

• 200

• 50

• 3

• 0

Match the function notation with the statement that best describes it.

• M(t)

• The number of miles driven in t hours.

• M(2)=120

• The number of miles driven in 2 hours is 120 miles.

• M(t)=240

• The number of miles driven in t hours is 240 miles.

• M(2)

• The number of miles driven in 2 hours.

This function represents a rocket being launched. Represent in function notation when the rocket launches.

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The function, R, represents the height of a rocket being launched in feet, as a function of time, t, in seconds. What does the following function notation mean in this situation?

R(3) = 200

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