Algebra 2 Companion Book, Volume 1

2.1 Review Worksheet, Part 2

2.1.4 Writing Linear Functions Write the equation of each line in slope-intercept form. 1. 2.

3.

4

4

2

2

2

–4

–2

2

4

–2

–4

–2

2

4

–4

–2

2

4

–2

–2

–4

Find the slope of each line. 4.

 AB through A ( − 1, 3) and B (1, − 4)

5. line

x y

0 1 2 3

1 3

1 3

5 3

1

Write the equation of each line in slope-intercept form. 6. passing through (3, 11) with slope 7.

7 3

x y

10 15 20 25 –2 –7 –12 –17

8.  The table shows the number of times a firefly flashes per minute at various temperatures. a. Express the flashing rate f ( T ) as a function of temperature T .

Firefly Flashing Rate Temperature (ºF) Flashes per Minute 84 16 93 20 66 8

b. Graph the relationship between temperature and the number of flashes per minute.

c. At what temperature would a firefly flash 25 times per minute?

d. How many times per minute would a firefly flash at 35ºF. Is this reasonable?

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