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 = -10)
a.) -3,000
b.) -2,000
c.) 2,000
d.) 3000

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)