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The newspaper in Haventown had a circulation of 80,000 papers in the year 2000. In 2010, the circulation was 50,000. With x = 0 representing the year 2000, the graph below models this scenario.

What number will complete the point-slope equation that models this scenario?

y 50,000 = (x 10)

User Sgx
by
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2 Answers

2 votes

Answer:

-3000

Step-by-step explanation:

The missing number is the slope of the line.

To calculate the slope, we use the formula


m=(y_2-y_1)/(x_2-x_1)

Using the points (0, 80000) and (10, 50000) [remember, the year 2000 is at x = 0; this means the year 2010 would be at x=10] we have:

m = (50000-80000)/(10-0) = -30000/10 = -3000

The missing number, the slope, is -3000.

User Amonk
by
6.4k points
7 votes
-3000 is correct
Hope this helps :D
User Hjulle
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6.0k points