Question 172531
I get {{{p = -x + 62}}}
Since {{{p = mx + b}}},
(1) {{{20 = 42m + b}}} and
(2) {{{10 = 52m + b}}}
subtract (2) from (1)
{{{10 = -10m}}}
{{{m = -1}}}
Put this back into (1) or (2)
{{{20 = -42 + b}}}
{{{b = 62}}}
The equation is
{{{p = -x + 62}}}
This predicts that they can't sell any tiles if the
price is $62 and they will sell 62 tiles if they
give them away. In reality, they would sell their
entire stock then, so this isn't real-world