Question

Question #79e49

Answer 1

`k=1`

Explanation:

`"since the point "(2,12)" lies on the graph of f(x) then"`
`"it will satisfy the equation"`

`"substitute "x=2,y=12" into "f(x)`

`rArr12=8k+4-2k+2`

`rArr12=6k+6`

`rArr6k=6rArrk=1`