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Alchen [17]
2 years ago
12

The temperature at 9:00pm one evening was 40 Fahrenheit. Over the next 4 hours the temperature dropped at n average rate of 3 pe

r hour. What was the temperature at 1:00am?
Mathematics
1 answer:
marysya [2.9K]2 years ago
8 0

Answer:

28 degrees Fahrenheit

Step-by-step explanation:

If the temperature at 9:00pm one evening was 40 Fahrenheit. And for the next 3 hour it dropped 3 degrees per hour then it would be

40 - 4 times 3 =

40 - ( 4 times 3 ) =

40 - 12 = 28 degrees Fahrenheit

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Since the slope of parallel line are same.

So, we can easily use formula,

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and m is a slope of line passing through (x₁, y₁).

and since the slope of parallel lines are same, so here we use slope of parallel line for calculation.

and, Slope = m = \dfrac{y_{b}-y_{a}}{x_{b}-x_{a}}

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Putting all values above formula. We get,

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⇒ y - 9 = 2x - 16

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which is required equation.

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