Functions Worksheet - Big Ideas Math Prealgebra: A Florida Standards Curriculum Teaching Edition Page 23
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47Exercises
6.3
Help with Homework
Is y = mx + b a linear function
1.
STRUCTURE
y
5
when b = 0? Explain.
4
3
2.
WRITING
Explain why the vertical line does not
2
represent a linear function.
1
1
2
4
5
x
The table shows a familiar linear pattern from geometry. Write a function that
relates y to x. What do the variables x and y represent? Graph the function.
3.
4.
x
1
2
3
4
5
x
1
2
3
4
5
π
2 π
3 π
4 π
5 π
y
y
2
4
6
8
10
x
4
x
Use the graph or table to write a linear function that relates y to x.
1
1
2 2
y
y
5.
y
6.
7.
8
4
10
6
8
3
4
2
6
4
1
2
8
6
4
2
2
4
6
8
x
4
3
2
1
1
2
3
4
x
6
4
2
2
4
6
8 10
x
4
2
6
4
3
8
4
6
8.
9.
10.
−2
−1
−3
−8
−4
x
0
1
x
0
3
6
x
0
4
−4
−2
−1
y
0
2
y
3
5
7
9
y
2
1
0
11.
MOVIES
The table shows the cost y (in dollars) of renting x movies.
3 3
a. Which variable is independent? dependent?
Number of
0
1
2
4
b. Write a linear function that relates y to x.
Movies, x
Interpret the slope.
Cost, y
0
3
6
12
c. Graph the linear function.
d. How much does it cost to rent three movies?
Section 6.3
Linear Functions
261
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