SOLUTION: the following graph shows the enrollment at a community college. 1997- 6,000 1998- 8,000 1999- 10,000 2000- 12,000 2001- 14,000 what was the increase in enrollment from 1997

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Question 125699: the following graph shows the enrollment at a community college.
1997- 6,000
1998- 8,000
1999- 10,000
2000- 12,000
2001- 14,000
what was the increase in enrollment from 1997 to 2001?
write as an equation and figure.
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
the following graph shows the enrollment at a community college:
1997-+6000
1998-+8000
1999-+10000
2000-+12000
2001-+14000
as you can see, the difference between each two consecutive years is 2000, so the increase in enrollment y from x1 to x2 year will be equal to the sum of prodct 2000times the difference between each two years (in your case 1997 and 2001) and the number of enrolled students in 1997:
y=+2000%28x2-x1%29+%2B+6000
from 1997 to 2001 will be
y=+2000%282001-1997%29+%2B+6000
y=+2000%284%29+%2B+6000
y=+8000+%2B+6000
y=+14000
the increase in enrollment from 1997 to 2001 is 8000
or, you can simply find it this way:
if the increase in enrollment from 1997 to 2001 is y,the number of enrolled students in 1997 is x1 and the number of enrolled students in 2001 is x2, then:
y+=+x2+-x1
y+=+14000+-6000
y=8000