Problema Solution
from 1983 through 1991 the # of evening newspapers published in the US decreased at an average rate of APPROX. 30 per year. In 1988 there were 1141 evening newspapers. Let 0 represent 1980. Write an equation in the slope-intercept form that relates the # of evening newspapers y to the year x
Answer provided by our tutors
1988:1141 evening newspapers
1980: 1141 + (8*30) = 1381 newspapers
two points: (0, 1381) and (9, 1141)
slope = (1141-1381)/(9) = -80/3
slope intercept:
y- 1381 = (80/3)(x-0)
equationo f the line:
y = (80/3)x + 1381