Question 914789
{{{ y = 133 - (( x - 1.5 ) / .75 )*30 }}} answer
Check the equation:
suppose
{{{ y = 103 }}}
{{{ 103 = 133 - (( x - 1.5 ) / .75 )*30 }}} 
{{{ 30 = ( x - 1.5 ) / .75 )*30 }}} 
{{{ 1 = ( x - 1.5 )/ .75 }}}
{{{ x - 1.5 = .75 }}}
{{{ x = 2.25 }}}
OK
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Soppose
{{{ x = 3 }}} ( $3 )
{{{ y = 133 - (( 3 - 1.5 ) / .75 )*30 }}}
{{{ y = 133 - ( 1.5 / .75 )*30 }}}
{{{ y = 133 - 2*30 }}}
{{{ y = 133 - 60 }}}
{{{ y = 73 }}}
Correct because every $.75 increase in price 
will lower {{{ y }}} by {{{ 30 }}}, and
$3 is $1.50 + ( $.75 )*2
and that makes a decrease of 60 in {{{y}}}
Make sense?