Please help with graphing question

Cole1

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Mar 9, 2006
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I cannot figure out how to graph what I think is the second set of points for the below question. Can any help!!

A toy mfg makes two types of toy planes, jets and biplanes. Each month they make at most 120 planes. A jet takes 2 hrs to build and a biplane takes 5 hrs. They use 500 hours or less each month to build toy planes. I need to make a graph showing the number of jets and biplanes that can be made each month.

My equation is, I suppose, J + B <= 120 (so i would draw a line from point 120 to 120?

I think the second line would be 2J + 5B <= 500. I dont know how to simplify this and graph the line.

I may be wrong in my thinking all together. Any help is greatly appreciated!!!
 
My equation is, I suppose, J + B <= 120 (so i would draw a line from point 120 to 120?

... yes, from 120 on the "J" axis to 120 on the "B" axis.

I think the second line would be 2J + 5B <= 500.

... correct, let J = 0, then B = 100.
then let B = 0, and J = 250.
draw a line from 100 on the "B" axis to 250 on the "J" axis.

the innermost region next to the axes is the usable domain for values of J and B.
 
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