$270,000 $250,000
$230,000
$210,000
$190,000
$170,000
$150,000
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
You have learned that calculating relative change of a quantity gives you the percentage increase or decrease. Use the Median New House Cost graph to estimate the
percentage increase in new housing prices from 1999 to 2007. (Choose the best answer.)
O The prices increased from around $160.000 to around $220,000, about a 38%
increase.
The prices increased from around $160,000 to around $220,000, about a 35%
increase.
The prices increased from around $160,000 to around $245,000, about a 65%
increase.
The prices increased from around $160,000 to around $245.000 about a 53%
increase

Step-by-step explanation:

Given the table:

Month              f(x) = Number of imports    g(x) = Number of exports

January (1)                3                                                1

February (2)             4                                                3

March (3)                  5                                                5

April (4)                     6                                                7

From the table, it is clear that:

Number of imports = number of month + 2

so

also

Number of exports  = 2(number of month) + 1

so

Therefore, number of imports equals the number of month plus one. i.e. , which is a linear function.

If we compare it with slope-intercept form of the line

Then,

slope = m = 1

y-intercept = 2

Also number of exports equals is also a linear function.

i.e.

Here,

slope = m = 2

y-intercept = -1