- Activity 1: What's My Equation? Directions: Find the constant of variation and write the equation to express the relationship using that constant,
1. a varies directly as b and a= 15 when b=5 Constant: Equation:
2. p is jointly proportional to q and r and p= 12 when q= 8 and r = 3
Constant: Equation:
3. c varies inversely as d and c= 7 when d = 4 Constant: Equation:
4.r varies directly as s and inversely as the square of u, and r-2 when s=18 and u=2. Constant: Equation:
5. e varies jointly as fand g and e = 24 whenf=3 and g=2 Constant: Equation:
6. w is inversely proportional to the cube ofx and w is 54 when x = 3
Constant: Equation:
7. h is directly proportional toj and h= 12 when j = 8 Constant: Equation:
8. a is jointly proportional with the square of x and the square root ofy and a = 25 when x=5 and y=9
Constant: Equation:
9. m is inversely proportional to n and m = 1.8 when n= 2.1
Constant: Equation:
10. w varies directly as x and y and inversely as v2 and w=1200 when x=4, y=9 and v=6. Constant: Equation:
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