Question 122172
1950 18
1960 23
1970 29
1980 32
1990 38
2000 42 
draw a line graph for the data. 
use a line graph to predict the population in the year 2010. 
( i am so confused on this could you please help thank you soooo much)
<pre><b>
If we plot the points and connect them on this graph

{{{drawing(500,500,-1,10,-1,50,
locate(.1,0,0),locate(.1,1,1),locate(.1,2,2),locate(.1,3,3),locate(.1,4,4),locate(.1,5,5),locate(.1,6,6),locate(.1,7,7),locate(.1,8,8),locate(.1,9,9),locate(0,10,10),locate(0,11,11),locate(0,12,12),locate(0,13,13),locate(0,14,14),locate(0,15,15),locate(0,16,16),locate(0,17,17),locate(0,18,"18--"),locate(0,19,19),locate(0,20,20),locate(0,21,21),locate(0,22,22),locate(0,23,"23--"),locate(0,24,24),locate(0,25,25),locate(0,26,26),locate(0,27,27),locate(0,28,28),locate(0,29,"29--"),locate(0,30,30),locate(0,31,31),locate(0,32,"32--"),locate(0,33,33),locate(0,34,34),locate(0,35,35),locate(0,36,36),locate(0,37,37),locate(0,38,"38--"),locate(0,39,39),locate(0,40,40),locate(0,41,41),locate(0,42,"42--"),

locate(0,43,43),locate(0,44,44),locate(0,45,45),locate(0,46,46),locate(0,47,"47--"),

locate(1,0,1950),locate(2,0,1960),locate(3,0,1970),locate(4,0,1980),locate(5,0,1990),locate(6,0,2000),locate(7,0,2010),locate(8,0,2120),
line(1.5,17.5,2.5,22.5), line(2.5,22.5,3.5,28), line(3.5,28,4.5,31),
line(4.5,31,5.5,37), line(5.5,37,6.5,41) 

 )}}}

Then notice how the line is climbing upward, with a few wiggles,
Let's extend it further at the top so that it goes
directly over 2010:

{{{drawing(500,500,-1,10,-1,50,
locate(.1,0,0),locate(.1,1,1),locate(.1,2,2),locate(.1,3,3),locate(.1,4,4),locate(.1,5,5),locate(.1,6,6),locate(.1,7,7),locate(.1,8,8),locate(.1,9,9),locate(0,10,10),locate(0,11,11),locate(0,12,12),locate(0,13,13),locate(0,14,14),locate(0,15,15),locate(0,16,16),locate(0,17,17),locate(0,18,"18--"),locate(0,19,19),locate(0,20,20),locate(0,21,21),locate(0,22,22),locate(0,23,"23--"),locate(0,24,24),locate(0,25,25),locate(0,26,26),locate(0,27,27),locate(0,28,28),locate(0,29,"29--"),locate(0,30,30),locate(0,31,31),locate(0,32,"32--"),locate(0,33,33),locate(0,34,34),locate(0,35,35),locate(0,36,36),locate(0,37,37),locate(0,38,"38--"),locate(0,39,39),locate(0,40,40),locate(0,41,41),locate(0,42,"42--"),

locate(0,43,43),locate(0,44,44),locate(0,45,45),locate(0,46,46),locate(0,47,"47--"),

locate(1,0,1950),locate(2,0,1960),locate(3,0,1970),locate(4,0,1980),locate(5,0,1990),locate(6,0,2000),locate(7,0,2010),locate(8,0,2120),
line(1.5,17.5,2.5,22.5), line(2.5,22.5,3.5,28), line(3.5,28,4.5,31),
line(4.5,31,5.5,37), line(5.5,37,6.5,41),line(6.5,41,7.5,46) 

 )}}}

It appears that it is even with 47 on the left. So the best estimate is
47 thousand in 2010.

Edwin</pre>