4.1-4.2 Function Notation Review

f(2) =

Find f(4).

f(4) =

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

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

• 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(x) = 5.

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

Find h(-1).

Hint: Find h(x) when x is -1.

If h(x) = 19, Find the value for x.

If f(x) = 2x + 1, what would be your first step to find f(1)?

• Plug a 1 in for all the x's

• Set the function equal to 1

Write f(2) = 4 as a coordinate pair.

Evaluate f(-2) if f(x) = x+3

f(-2) =

Given the function f(x) = 2x - 3, what is x if f(x)=7?

Hint: Plug in 7 for f(x) and solve to find x.

7 = 2x - 3

x=