B. What's the Equation? Directions: Find the constant of variation and write the equation to express the relationship using that constant. (Show your solution) Given Constant Equation 1. a varies directly as b and a = 15 when b= 5 2. p is jointly proportional to q and rand p= 12 when q = 8 and r= 3 3 c varies inversely as d and c=7 when d = 4 4. y varies directly as x and inversely as z. If y = 5 when x=2 and 2=4