If y varies inversely as x, find the constant of variation if y = 5 when x = -1. a) -5 b) 5 c) -2 d) 2

(a) - 5

since y varies inversely as x then  k = yx ( k is the constant of variation )

using y = 5 when x = - 1, then k = 5 × - 1 = - 5

the correct answer is 5 6 and 7