Practice Test #2 for Week 3
Tools:
1. Define a function
2. Is this a function? (2,5) (3,6) (2,7) Why/why not?
3. Make a table of a function with 3 points
4. Why do we care about functions in math?
5. Draw a graph of a function. Why is it a function?
6. The outside temperature for April 15 is a function of the hour of the day. Express this using function notation
7. What is the practical range for #6 above?
8. What is the domain for #6 above?
9. Draw a graph for the following. I win the lottery and get 2 million dollars. By the next year I spend all but 1 million. Over the next 2 years I spend the remaining million, then I am broke for 3 years. I get a job and make 30,000 the following year.
10. Find the equation of a line that goes through points (1,5) and (4,3)
11. Draw a quick graph of y = 1/3x – 1
12. How do you find the average rate of change between 2 points?
13. A linear function goes through point (4,5) and has a y intercept of 1. What is the slope? What is the equation for the line?
14. Solve: .4(-2)-3+(-.6)/2+3(-1) – 1
15. Truck licenses in a state have 2 numbers followed by 4 letters. How many trucks can be licensed in this state?
16. How many trucks in #15 could have licenses with a vowel at the beginning and end of the 4 letters and start with the number 2 or 4?
I will post the answers to these questions later today. Check to see how you did, and come with questions before we start our quiz on Thursday.