SOLUTION: D is partly constant and partly varies with V. When V = 40, D = 150 and when V = 54, D = 192. (a) Find the formula connecting D and V (b) Hence, Find D when V = 73.

Question 1206667: D is partly constant and partly varies with V. When V = 40, D = 150 and when V = 54, D = 192.
(a) Find the formula connecting D and V
(b) Hence, Find D when V = 73.
Answer by josgarithmetic(39623) (Show Source): You can put this solution on YOUR website!
"partly constant and partly varies..."
What?

I waited to see if someone gives you a response for this "partly constant and partly varies" problem. Not see any yet. Maybe this older one may help you: https://www.algebra.com/algebra/homework/coordinate/word/Linear_Equations_And_Systems_Word_Problems.faq.question.1143596.html

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MAYBE,....
a linear form equation

Equate the k expressions and solve for m.

Use m to find value for k.

If this is the kind of method you expect , then D and V are to be related
.

(b)

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