2.1.4 Writing Linear Functions − Worksheet (continued)
Example 4: 9. The boiling point of water can be modeled as a linear function of altitude. The boiling point of water at sea level is 212ºF, and the boiling point of water at 1100 ft above sea level is 210ºF. a. Express the boiling point as a function of altitude.
b. Graph the relationship between boiling point and altitude.
c. Find the boiling point of water at an altitude of 11,000 ft.
Example 5: Write the equation of each line in slope-intercept form. 10. parallel to y = 3 x + 4 passing through (0, 9)
11. perpendicular to = + y x 5 9
4 passing through
(0, − 4)
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