Common Core 8th Grade
Statistics and Probability
Situation: Daniel is running
laps around the track at
school. The table at the right
shows the number of laps he
completes for each number
of seconds.
Equation: y  . 01 x  . 336
Time (in Number
seconds) of Laps
75
1
160
2
240
3
369
4
Equation:
Time (in
months)
Money in
account
5
1425
8
1280
10
1160
17
525
y   77 . 05 x  1868 . 01
Situation: Rayna is interested in
buying new boots in a few years.
She uses the equation y  3 x  75 to
4
predict the price, y, of a particular
pair of boots, x years from now.
Time since
sunset(in
hours)
Temperature
(in degrees)
2
43
3
39
6
37
8
33
Equation: y   1 . 45 x  44 . 89