Question

In 1980, median family income was about $19,000 and in 2000 it was about $40,000. a) Find the slope of the line passing through the points (1980,19000) and (2000, 40000). b) Interpret the slope as a rate of change. c) If this trend continues, estimate the median family income in 2005.

Answer 1

slope=(y2-y1)/(x2-x1)

Answer 2

i have the slope now i need part b and c, can you help, please

Answer 3

the slope is 1050, correct?

Answer 4

Yep, very correct

Answer 5

Now, rate of change = slope

Answer 6

how would i go about solving that?

Answer 7

Actually, slope is the rate change of the family income of median family per year

Answer 8

Now, for c
Medain family income in 2005 = 19000+1050*25

Answer 9

got it?

Answer 10

c is 45250. i am still trying to figure out b

Answer 11

Yep

Answer 12

the options for b are: a) the median family income is increasing at the rate of 1050 per year. b) the median family income increases by 1050 between 1980 and 2000. c) the median family income is decreasing at the rate of 1050 per year or d) the median family income decreses by 1050 between 1980 and 2000.

I think it is B because 1050 is a positive number, and we used 1980 and 2000 to come up with the slope.

Answer 13

a) the median family income is increasing at the rate of 1050 per year

Answer 14

got itt?

Answer 15

yes i get it thnx!!!!