Chapter 9 Algebra Worksheet With Answers - Montville Township Public Schools Page 27
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31Study Guide and Review - Chapter 9
x
x
An equation that models the data is y = 1 • 2
or y = 2
.
47.
SOLUTION:
Calculate the first differences.
Calculate the second differences.
Since the second differences are equal, a quadratic function models the data.
2
Write an equation for the function that models the data. The equation has the form y = ax
. Use the ordered pair (1,
–1) to find the value of a.
2
An equation that models the data is y = –x
.
Graph each function. State the domain and range.
48.
SOLUTION:
Make a table of values.
x
f (x)
0
0
0.5
0
1
1
1.5
1
2
2
2.5
2
3
3
Because the dots and circles overlap, the graph will cover all possible values of x, so the domain is all real numbers.
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The range is all integers.
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