Evaluating Functions - newpaltz.k12.ny.us
Evaluating Functions 3 Name:
1) Given [pic] graphed below, evaluate the following:
a) [pic]
b) [pic]
c) [pic]
d) Why is [pic] a function?
e) Write the domain and range of [pic].
f) Challenge: Write the equation of [pic].
2) Given [pic] graphed below, evaluate the following:
a) [pic]
b) [pic]
c) Approximate[pic]
d) Why is [pic] a function?
e) Write the domain and range of [pic].
3) If [pic] and [pic], evaluate the following:
a) [pic] b) [pic]
c) [pic] d) [pic]
4) Let J(x) be Laura’s distance above the ground as she skydives and falls to the ground, where x is time in seconds and J(x) is distance in feet. Interpret (i.e. use words to describe) the following:
J(0) = 13,500
J(10) = 10,570
Extra: Sketch a possible graph of J(x).
5) Let g(x) be the number of gallons of gas used by a car during a drive, where x is the number of miles. Interpret the following:
g(20) = 0.8
g(130) = 5.6
Extra: Sketch a possible graph of g(x).
Extra: What is this car’s approximate miles per gallon rate?
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