David W. answered • 10/29/19
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The air temperature is -6 degrees celsius at sunrise and rises 3 degrees celsius every hour for several hours. The air temperature after x hours is represented by the function
f(x) = 3x — 6
The y-intercept, the value of y when x=0, is (-6), the temperature at sunrise. Note that x=0 is when observation starts.
The x-intercept, the value of x when y=0, is (2), the number of hours after sunrise when the temperature gets up to 0.
