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davie08
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Homework Statement
okay I know understand that I should get a reasonable understanding about the questions I post before I post them sorry about before.
An Illinois farmer will plant from 800 to 2000 acres of soybeans. The number of acres q that he will plant depends on the selling price per bushel p that is being paid in April. Suppose that if p=$10, then all 2000 acres will be planted, but if p=$6.25, then only 800 acres will be planted.
a)Assuming p and q are linearly related, find q as a function of p, giving a suitable domain.
Homework Equations
The Attempt at a Solution
for some reason this question seems to work out to be the opposite of what I've been doing with my other word problems, here's what I tried.
(2000,10) and (800,6.25)
m=6.25-10/800-2000 = .003125
q-q1 = m(p-p1)
q-2000 = .003125(p-10)
q-2000 = .003125p - .03125
q= .003125p + 1999.96875 800<q<2000
so this is the wrong answer and to get the right answer I have to make p my x and q my y. Then for the domain you find what it is for price.
But I just saw a tutor and she has it on a formula sheet that x=q and p=y.