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If Q varies directly as P and Q = 28 when P = 4, then
a) Write an equation connecting P and Qb) Find the value of O when P = 5 and
c) Find the value of P when Q = 42.
Given,
Q is directly proportional to P.
Q∝P
This implies,
Q=k(P) where k is any constant.
When Q=28, P=4
28=(k)x4
k=28/4
k=7
a. Equation connecting P and Q is Q=4P.
b. Value of Q when P=5 is,
Q=(7)x(5)
Q=35.
c. Value of P when Q=42 is,
42=(7)P
P=42/7
P=6.
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