Question

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?

Answer 1

I encountered this question before. Here's my answer.
A Point-Slope equation of a straight line has this form: y - y1 = m(x-x1)

We can recognize any points of the graph.
(0,80000) ; (10,50000)

Given:
y -50,000 =______(x -10)

We need to find the slope.

Slope = Change in y / Change in x = 80,000 - 50,000 / 0 - 10 = 30,000 / -10 = -3,000

The slope is equal to -3000. Choice A.

y -50,000 = -3,000(x -10)

Answer 2

Answer:

A

Step-by-step explanation: