In 1980, median family income was about 19000 and in 2000 it was about 42000
a) find the slope of the line passing through the points (1980,19000) and (2000,42000)
b)Interpret the slope as a rate of change.
c) if this trend continues, estimate the median family income in 2007.
Stacey Warren - Expert brainly.com
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Don't think I am going to graph it.. but idea isn't too bad.. Take the word problem and translate it to algebra..
You can first establish a base.. in this case. 1980 and 19,000
So, y(x) = m x
=> 19,000 = m (1980)
=> 42,000 = m (2000)
This is kinda good.. but we need to find out what m is..
Do you know how to find what m is?
no i am lost i have tried many problems like this and got them all wrong
ok.. I will explain if you want to hear....
When you have 2 points on a chart.. you can draw them like so.... (give me a sec)
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The money axis can be thought of in the variable "y" and the Year can be labeled as "x" , just for simplicity sake.
you get an x and y coordinate, it's simply write in point notation (x,y)
Then, as you fish through your book, there is an equation that you need to use call a point slope equation.. it is basicly for taking 2 points and calculating the slope.
Do you know it? or can you find it and type it in for me?
If you are just looking for answers, I don't do that..