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20
18
16
14
12
10
8
6
4
2
Match the graph with the equation.
y=x
y =­2x +14
y = 1x +6
2
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a) Estimate the monthly water usage for a population of
150 000 people.
b) Predict the
water usage for
250 000 people. 4_5.notebook
April 18, 2017
a)
E
mont stimate th
hly
e for a water us
p
a
150 opulation ge o
000 p
eople f
.
Interpolation... estimate values that lie between two data points
4_5.notebook
b)
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Predict the
water usage for
250 000 people. Use a ruler to extend
the line.
Extrapolation... estimate values that lie outside the given data points
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Jenna borrowed
$200.
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Jenna owes
$140 after 3
weeks.
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It will take
Jenna 5 weeks
to pay one-half
of them money
back.
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You must use extrapolation. :)
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April 18, 2017
Answers:
a) It will take Maya
about 16.5 minutes
to jog 2000m.
b) Maya will jog about
1690m in 14 minutes.
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Which questions can be answered using interpolation?
Determine the values of y for
each of the following values
of x.
a) x = -3
b) x = 6
c) x = -4
Determine the values of x
for each of the following
values of y.
a) y = 3
b) y = 7
c) y = 2
Which questions will have to be answered using extrapolation?
4_5.notebook
April 18, 2017
Determine the values of y for
each of the following values
of x.
a) x = -3
b) x = 6
c) x = -4
Determine the values of x
for each of the following
values of y.
a) y = 3
b) y = 7
c) y = 2
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April 18, 2017
Class / Homework
Pages 196 ­ 198
4 ­ 14