Question

y varies inversely with x. If y = 4 when x= -6, find the constant of variation and find the value of y when x= -2

Answer 1

constant of variation: k = -24

y = 12 when x = -2

Explanation:

y varies inversely with x equation is: y = k/x

where 'k' if the constant of variation

plug in:

4 = k/-6

cross-multiply to get value of 'k' which is -24

plug in:

y = -24/-2

y = 12