Question 1062666
Find the line containing the two points,  (0.8, 200), and (1, 150).  What is y when x=0.9 ?



{{{y-150=((150-200)/(1-0.8))(x-1)}}}


{{{y-150=(-50/0.2)(x-1)}}}


{{{y-150=-250x+250}}}


{{{highlight(y=-250x+400)}}}
now let x=0.9 and find y.