Short Answer
|
|
|
1.
|
Evaluate  for x = –3.
|
|
|
Graph the function.
|
|
|
2.
|
|
|
|
3.
|
|
|
|
4.
|
Use the table to make a scatter plot of the temperature and the number of ice
cream cones sold at the school cafeteria. Identify any correlation. Temperature | Number of Cones Sold | 59 | 58 | 76 | 83 | 94 | 102 | 67 | 73 | 85 | 99 | 74 | 78 | 97 | 107 | | |
|
|
|
5.
|
Find the range of  for the domain {–3, –2, –1,
1}.
|
|
|
Use the vertical line test to determine whether the relation is a
function.
|
|
|
6.
|
|
|
|
Is the relation a function? Explain.
|
|
|
7.
|
{(2, 15), (15, –4), (–9, –7), (13, 14)}
|
|
|
8.
|
{(–5, –5), (3, 10), (7, 14), (3, 9)}
|
|
|
9.
|
If you know the number of yards for a measurement, you can change that measure
to meters by multiplying the number of yards by 0.9144. a. Write a function rule that
relates meters to yards. b. How many meters are equivalent to
7,200 yards? Round your answer to the nearest hundredth, if necessary.
c. How many yards
are equivalent to 2,500 meters? Round your answer to the nearest hundredth, if
necessary.
|
|
|
10.
|
Is there a positive correlation, a negative correlation, or no
correlation in the scatter plot? Explain the relationship between the data on the horizontal axis
and the data on the vertical axis. 
|
|
|
Write a function rule for the table.
|
|
|
11.
|
|
|
|
Graph the linear equation.
|
|
|
12.
|
y = 3x + 4
|
|
|
13.
|
y = –2x – 2
|
|
|
14.
|
The scatter plot shows the number of students per class at Monida Middle School
and the number of magazine subscriptions each class sold for a fund-raiser. About how many
subscriptions did the class of 20 students sell? 
|
|
|
15.
|
The graph below shows your speed at different times riding a bicycle uphill,
downhill, and on level pavement.  | a. | For how long were you
going uphill? | | b. | For how long were you going downhill? | | c. | For how long were you riding on level
pavement? | | |
|
Essay
|
|
|
16.
|
Ayesha is a gardener who makes square gardens in various sizes. The table shows
the side lengths, in feet, and the areas of various gardens, in square feet. Side Length (feet) | Area (square feet) | 14 | 196 | 18 | 324 | 22 | 484 | 26 | 676 | 30 | 900 | | |
a. Write the values from the table as a set
of ordered pairs (side length, area). b. Graph the relation. Describe the graph and explain
whether it is a function. c. Describe the relationship between the side length and the area
of the gardens. d. Suppose the area of a garden is 3,600
square feet. Describe how to find the side length of the garden.
|
|
|
17.
|
On one evening at 6 P.M., the temperature was 24  F. As the
night progressed, the temperature dropped at the steady rate of 4  F per
hour. a. Make a table of values for the function for values
of x from 0 through 8. Let 0 represent the time of 6 P.M. b. Write a function rule
for the linear function. Explain your method for writing the rule. c. At what time will the
temperature reach 0  F? Explain your method for finding the
time.
|
Other
|
|
|
18.
|
The graph below shows the average daily temperature over the period of a year.
Explain how each labeled section of the graph relates to the four seasons. 
|