If y varies inversely as x, and y = 14 when x = 8, find y when x = 7.

y = 16

Step-by-step explanation:

Given y varies inversely as x then the equation relating them is

y =

To find k use the condition y = 14 when x = 8, thus

14 = ( multiply both sides by 8 )

112 = k

y = ← equation of variation

When x = 7, then

y = = 16

x is greater than 5

step-by-step explanation:

2x+7 is greater than 17

    -7                           -7

2x is greater than 10

divide by 2 each side

x is greater than 5

345

step-by-step explanation: