Question 1134205
two points on the line (-4,1) and (5,7);

{{{f(x)-1=((7-1)/(5+4))(x+4)}}}

{{{f(x)=(2/3)(x+4)+1}}}

{{{f(x)=(2/3)x+8/3+3/3}}}

{{{f(x)=(2/3)x+11/3}}}



The questions asks for f when x is 1250.  You can do that!