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5/12 Identify Rate of Change P3 & P4
What is the rate of change of the line defined by the  following equation:
y = -3x + 2
  x
 -2
 -3x
 -3
What is the rate of change for the above data
table?
x
y
 1/7
 1/4
 1
 7
4
1
11
2
18
3
25
4
32
5
What is the rate of change 
for the equation z = 2x + 100
 2
 -2
 1/2
 -1/2
Calculate the rate of change of the 
following equation:
 2
 1
 5
 -2
y = - 2x + 10
Which of the graphsrepresents anegative rate of change?
a)
c)
b)
d)
What is the rate of change for the above data table?
x
y
15
2
 -4
 -2
  2
  4
11
4
6
7
8
3
10
-1
Which of the following tables has a rate of change 
of -3?
a)
b)
y
y
x
x
-2
6
1

3

-6
2
2
4
-18
3

5

6
c)
d)
x
y
x
y
10
0
2
-4
2
4
0
0
10
4
8
4
Which of the following equations has a positive rate
 of change?

  y = 7x
  y = -3x - 1
  y = 5 
 y = -2x + 10 
One-third of a 57 member band plays brass instruments.  What expressions(s) would be correct to calculate how many people play brass instruments?

x + 57
1/3 • 57
57 ÷ 1/3 
57 - 3 
Ben buys a car, when he purchases it, the odometer has 1000 miles on it.  If Ben drives 80 miles per day, write an equation to show how many miles (m) he drives in (d) days.
m = 80d + 1000
d = 80m + 1000
m = 1000d + 80
m = 1080d
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