Question 1156108
2012 is 10 yrs after 2002
You are given 2 points on a straight line
( 0, 5370 )
( 10, 8720 )
Let {{{ x }}} = year - 2002
Let {{{ y }}} = tuition in dollars
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Use the general point-slope formula
{{{ ( y - 5370 ) / ( x - 0 ) = ( 8720 - 5370 ) / ( 10 - 0 ) }}}
{{{ ( y - 5370 ) / x = 3350 / 10 }}}
{{{ ( y - 5370 ) / x = 335 }}}
{{{ y - 5370 = 335x }}}
{{{ y = 335x + 5370 }}}
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In 2018:
2018 - 2002 = 16 yrs
( 16, y )
{{{ y = 335*16 + 5370 }}}
{{{ y = 5360 + 5370 }}}
{{{ y = 10730 }}}
The tuition estimate for 2018 is $10,730
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check:
Here's the plot:
{{{ graph( 500, 500, -2, 20, -1500, 15000, 335x + 5370 ) }}}